Abstract

A waveguide scheme is constructed by coating the matrix of randomly distributed ZnSe nanosheet structures with a layer of dye-doped polymer, which provides strong feedback or gain channels for the emission from the dye molecules and enables successful running of a random laser with FWHM of ~0.65 nm. The strong scattering by the nanostructures and the strong confinement provided by the active waveguide layer are the key essentials for the narrow-band and low-threshold operation of this random laser. The random laser scheme reveals an obvious two-threshold behavior, which is corresponding to the thresholds of TM and TE modes. The feedback mechanisms for laser action are investigated by power Fourier transforming of the spectra. This kind of active waveguide not only provides high quality confinement of the radiation for efficient amplification, but also enables possible directional output of this kind of random laser.

© 2016 Optical Society of America

1. Introduction

Since the first theoretical prediction by Letokhov in 1960s [1] and the experimental demonstration by Lawandy in 1994 [2], the investigation of Random Lasers (RLs) has become an extremely attractive field [3–8]. RLs result from the interaction of light with disordered amplifying media, which are a consequence of multiple light scattering events by scatterers and the formation of closed loop paths from the sattered light [9–11]. RLs have been realized in variety of dielectric and metallic media with micro and nanometric dimensions, such as liquid laser dye with scatterers [12–14], semiconductors powders [15–18], fibers [19–21], polymer films [22–24] and dye-infiltrated opals [25]. Two types of feedback regimes in RLs are identified [24]: incoherent feedback, in which light propagation is diffusive and the probabilistic nature of diffusion means that interference contributes negligibly to the feedback process; coherent feedback, which occurs when the photon mean-free-path and the emission wavelength have the same order of magnitude making it possible for localization of the radiation field to occur within the structure.

The formation of an optical waveguide is a powerful approach to confine and control the propagation of light [26]. A waveguide structure based on dye-doped polymeric films is a typical random laser system. Several waveguide random laser structures have been reported. For instance, Zhai et al studied a waveguide-plasmonic scheme which is constructed by coating the matrix of randomly distributed gold nanoisland structures with a layer of dye-doped polymer [27]. Yuen et al room-temperature ultraviolet lasing is demonstrated in mirrorless zinc oxide thin-film waveguides on silicon substrate [28, 29]. Generally, nanoislands or nanoparticles are commonly utilized as scatterers, some special nanostructures are not exhaustively researched. Dominguez et al described a RL system with coherent feedback system in PVA films containing titanium dioxide nanomembranes [24], which demonstrates the possibility that special nanostructures can equally be used as scatterers in the waveguide RL system.

In the present paper, we demonstrate a new scheme for achieving coherent random lasing based on a waveguide structure consisting of a PMMA polymer film doped with Rhodamine 6G as gain media and a layer of ZnSe-nanosheets (ZnSe-NS) arrangement as scatterers. The cubic sphalerite structure ZnSe nanosheets is distributed disorderly exhibiting a flat and triangular morphology with typical length of 0.5 to 1 μm and average thickness of 30 nm, which is fabricated by a two-steps method (femtosecond pulsed laser ablation and hydrothermal technique). The random laser scheme reveals an obvious two-threshold behavior, which is corresponding to the thresholds of TM and TE modes. Moreover, the feedback mechanisms for laser action are investigated by power Fourier transforming of the spectra, implying that “scattering-total reflection- scattering” process and microcavities between nanosheets are attributed to the random laser action. In addition, as nanosheets in a large area are foreseen as new MEMS/NEMS building blocks, a new generation of combined active/passive photonic devices can be envisaged.

2. Experimental details

In the experiments, the ZnSe nanosheets are fabricated by a two-steps method. The first step in the samples preparation is a ZnSe nanoparticle film fabrication, which were grown on silica substrates by femtosecond pulsed laser ablation (FPLD) from a 99.999% pure ZnSe target. A regenerative Ti:sapphire mode-lock pulsed laser system with a central wavelength of 800nm (Coherent Inc, Lengend Elite, 40 fs pulse duration, a fluency of ~1 J/cm2 and 100 Hz repetition rate) is employed. Silica substrates with a thickness of 1 mm are placed on a heater at 45 mm distance from the target, which is raster-scanned in a circular area of 15 mm in diameter with the laser beam fixed. During deposition, the substrates are kept at 400 °C, the chamber base pressure is 1 × 10−5 Pa. Similar to the fabrication technology in the previous studies [30, 31], the second step for preparation ZnSe nanosheets is hydrothermal technique. The ZnSe nanoparticle films obtained by FPLD was placed in a autoclave, heated to 80 °C for 36 hours and then cooled to room temperature. Films were then washed with distilled water and absolute alcohol three times before being dried in a vacuum at 40 °C for 30 minutes.

The Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide samples were prepared by spin coating of a PMMA film (thickness of ≈2 μm, n1 = 1.51) containing Rh6G dye (Concentration of 10−3 M) on the surface of a quartz substrate (10 × 10 mm2) that supports the ZnSe-NS. In order to protect the PMMA-Rh6G film and obtain a flat waveguide structure, another silica slice (n2 = 1.45) with a thickness of 0.5 mm was covered above the PMMA-Rh6G film before it dried, hereby a Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide structure has been achieved. For comparison, additional samples with the same characteristics were prepared depositing the PMMA film with Rh6G directly on the middle of two quartz slices without ZnSe-NS. The purity and morphology of the as-prepared ZnSe-NS was characterized by XRD (X’Pert Pro MPD, Philips Research) and SEM (HITAC SU8220).

The waveguide samples were excited by a second harmonic of Nd: YAG laser (532 nm, 7 ns, 10 Hz, Innolas, GWU-Lasertechnik). Through a pinhole filter, a slit and a cylindrical lens, the excitation laser beam was focused onto the waveguide perpendicularly in a strip with the size of 15 μm × 12 mm. The edge fluorescence and waveguide laser emission was collected by a quartz fiber. In this experiment, we used an Ocean Optics USB4000 spectrometer (spectral resolution ~1.5 nm, five points collected per nanometer) for spectra measuring. To measure the pump energy, we used a beam-splitter in our experimental setup, and the reflected light was recorded by an energy meter (Ophir PE9F-SH), as shown in Fig. 1. Furthermore, the pump energy was kept below the damage threshold to prevent the destruction of the films and nanostructures.

 

Fig. 1 Schematic illustration of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide random laser and diagram of optical experimental setup, the inset is a photograph of emission when the pump energy is above the threshold.

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3. Results and discussion

A layer of 1-μm-thick randomly assembled ZnSe nanosheets were grown on a silica substrate by hydrothermal method. Figure 2 illustrates the SEM morphologies at different magnifications of ZnSe-NS on the silica substrate. As shown in Fig. 2(a), a typical dense disordered distribution sheet array morphology is revealed intuitively in the large area at the low magnification SEM. From the high magnification SEM, it is shown that most of the as-growth ZnSe-NS exhibits a flat and triangular morphology with typical length of 0.5 to 1 μm and average thickness of 30 nm. The inset of Fig. 2(a) describes the XRD patterns of ZnSe nanosheets film compared with those of ZnSe nanoparticles film and ZnSe bulk. The XRD researches were performed by angle X-diffraction with Cu Kα anode. The XRD peaks can be indexed as ZnSe cubic sphalerite structure.

 

Fig. 2 SEM images at different magnifications of ZnSe-NS grown on the surface of a quartz substrate using hydrothermal technique. The inset shows the XRD patterns of ZnSe bulk (Bottom blue line), ZnSe nanoparticle film fabricated by FPLD (Middle red line) and ZnSe-NS film (Top black line).

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Figure 3(a) shows the emission spectra of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide structure as a function of pump energy. Typical random lasing emission evolution spectra have been observed. At low pump intensity (15 μJ/pulse), only broad and featureless spontaneous emission spectra of Rh6G can be measured. In this case, the total gain of a certain random cavity cannot compensate the total loss, so there is no lasing action. As the pump energy is around the threshold (21 μJ/pulse), a ultra-narrow spike (FWHM ≈0.65nm) suddenly emerges on the broad emission background at the wavelength of 563 nm (as shown in the inset of Fig. 3(a)). This ultra-narrow peak represents a certain laser mode, and it is a direct evidence of the generation of coherent random lasing action [6]. Sharp lasing peaks start to emerge and the number of lasing peaks increases with the increase of pump power until saturation is reached. The appearance of laser spikes in the emission spectra is stable for the integration over 50 excitation pulses, indicating that after each excitation pulse, the system lases in the same modes and therefore at the same wavelengths. As for laser action, the pump energy corresponding to the appearance of the marrow peak, which is accompanied by rapid dramatic peak intensity, is regarded as the threshold. Figure 3(b) shows the peak intensity as a function of pump energy, which clearly demonstrate a threshold behavior with two thresholds at ~20 μJ/pulse and ~53 μJ/pulse. This phenomenon is similar to the previous studies [28, 31–33], and the reasons will be discussed later.

 

Fig. 3 (a) Emission spectra measured along the pump stripe for different pump energy, inset in (a): emission spectra just below and above the pump threshold. (b) Evolution of emission intensity as a function of pump energy, inset in (b): three photographs of emission at different pump energy above threshold. Three lines are guides for the eyes, and circles represent two thresholds at ~20 μJ/pulse and ~53 μJ/pulse.

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Figure 4 shows the normalized emission spectra of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide, Silica/PMMA-Rh6G/Silica and PMMA-Rh6G film, pumped at 532 nm with a fixed pumping energy. The spectrum FWHM of Silica/PMMA-Rh6G/Silica structure is about 10 nm, longer than that of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide (~2 nm) but shorter than that of PMMA-Rh6G film (~40 nm), which may be attributed to the amplified spontaneous emission efficiency (ASE) caused by light diffusive amplification in gain-induced waveguide channels . The dashed line shown in the inset of Fig. 4 corresponds to the function IASEI0(e(g-α)L-1), which fits well the experimental data. g and α are the gain and loss coefficients, respectively, and L is the pumping stripe length. Compared to the ASE, the FWHM of waveguide random lasing is decreased by about five times. The spectral characteristic is an evidence for the random laser engendered in the Silica/ZnSe-NS /PMMA-Rh6G/Silica waveguide.

 

Fig. 4 The normalized emission spectra of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide (I), Silica/PMMA-Rh6G/Silica (II), and PMMA-Rh6G film (III), pumped at 532 nm with a fixed pumping energy. The inset is emission peak intensity of Silica/PMMA-Rh6G/Silica as a function of the pumping pulse energy.

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A polarizer in the direction perpendicular (TM) and parallel (TE) to the waveguide film is ultilized to analyze the polarization properties of the lasing light from the lateral facets of the waveguide. Figure 5 shows the TM (Fig. 5(a)) and TE (Fig. 5(b)) spectra, and their threshold curves. It is obviously to observe that only two peaks appear with the pump energy increasing, implying that there are only two optical modes for the TM polarized light. However, the peaks of TE spectra are not immovable, the position and intensity of the peaks vary with the pump energy, indicating that there are several optical cavities formed the random laser. Moreover, the thresholds of TE and TM are different, ~18 μJ/pulse for TM and ~50μJ/pulse for TE respectively. This is the reason why we find two thresholds in Fig. 3(b). Due to the spectra measured in Fig. 3 consist of TM and TE polarization, the TM polarized random laser will firstly emerge at ~20 μJ/pulse, by increasing the pump energy to ~50 μJ/pulse, the TE random laser can be obtained. Consequently, the thresholds of TM and TE are corresponding to the two thresholds in Fig. 3(b).

 

Fig. 5 The TM (a), TE (b) spectra and threshold curves (c) of Silica/ZnSe-NS/PMMA-Rh6G/ Silica waveguide, pumped at 532 nm.

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If the lasing mechanism of the waveguide random laser is related to coherent random laser action, it is possible to deduce the closed-loop cavity length, l, of the corresponding random modes by power Fourier transform (PFT) [7, 25, 26]. Figure 6 shows the calculated PFT spectra of the TM and TE spectra. It is appreciated that the closed-loop cavity length of TM (lTM) and TE (lTE) is 8 and 2.6 μm respectively. Obviously, the lTM is much longer than lTE, which predicates that the closed-loop cavity types of TM and TE are different. The random lasing results from multiple events of light scattering taking place sequentially by the disordered ZnSe nanosheets at their interfaces with the PMMA doped with Rh6G, which is enhanced or multiplied by the PMMA layer through the confinement of the scattered light into the waveguide. This can be equalized to a kind of microcavity effect, where the “round-trip” forms between the total reflection at the PMMA-Silica interface and the strong scattering by the ZnSe nanosheets. Thus, each “round-trip” corresponds to a gain process through a “scattering-total reflection-scattering” process and the lasing action depends on the minimum mean free path length, which is defined as [27]: lmin = 2n2d/(n2-1)1/2, where n and d are the refractive index and the thickness of the gain medium, respectively. This path length is multiplied by the total reflection process and extended within the waveguide. In our experiments, n ≈1.51, d ≈2 μm, and we obtain lmin = 8.1 μm. It can be found that the lTM almost equals to lmin, demonstrating that the TM polarized laser is formed in “scattering-total reflection-scattering” process as shown in the inset (a) of Fig. 6. As for TE polarized laser, the lTE (2.6 μm) is much shorter than lmin (8.1 μm) meaning it do not form in the waveguide structure. Meanwhile, due to the special morphologies of ZnSe nanosheet which can be regarded as small mirrors (as shown in Fig. 2), it is reasonable to conceive that some ring cavities or F-P cavities may form between the nanosheets (as shown in the insets (b) and (c) of Fig. 6). The separation between nanosheets is about 0.2 μm to 1 μm, implying that closed-loop cavity lengths may be analogous to lTE. Hence, we can conclude that the TE polarized laser is formed in the microcavities between nanosheets, then guided by the waveguide structure to the edge facet.

 

Fig. 6 The calculated PFT spectra of the TM and TE spectra. The inset diagrams explain the closed-loop cavity formed in the waveguide (a), F-P cavity (b) and ring cavity formed between the nanosheets.

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4. Conclusion

We demonstrated a new RL scheme with coherent feedback in a sample consisting of a gain medium (PMMA film doped with Rhodamine 6G) adjacent to the scattering medium comprised of ZnSe nanosheets. The strong scattering by the nanostructures and the strong confinement by the active waveguide extend free path length significantly, enabling low pump threshold and high conversion efficiency of the random laser. The herein reported results open up new avenues to exploit nanomembranes arrangements as active integrated photonic devices. The incorporation of active random media, as demonstrated here, will certainly enhance these applications.

Acknowledgments

The authors acknowledge the Major Program of the National Natural Science Foundation of China (NSFC) (60890200) and NSFC (10976017).

References and links

1. V. Letokhov, “Stimulated emission of an ensemble of scattering particles with negative absorption,” Sov. Phys. JETP 26, 835–840 (1967).

2. N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994). [CrossRef]  

3. D. Wiersma, “The smallest random laser,” Nature 406(6792), 132–135 (2000). [CrossRef]   [PubMed]  

4. D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996). [CrossRef]   [PubMed]  

5. H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999). [CrossRef]  

6. D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008). [CrossRef]  

7. L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012). [CrossRef]  

8. A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005). [CrossRef]  

9. M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005). [CrossRef]  

10. O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006). [CrossRef]  

11. C. J. De Matos, C. M. Cordeiro, E. M. Dos Santos, J. S. Ong, A. Bozolan, and C. H. Brito Cruz, “Liquid-core, liquid-cladding photonic crystal fibers,” Opt. Express 15(18), 11207–11212 (2007). [CrossRef]   [PubMed]  

12. K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999). [CrossRef]  

13. H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497–10535 (2005). [CrossRef]  

14. G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007). [CrossRef]  

15. H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999). [CrossRef]  

16. H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010). [CrossRef]  

17. D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010). [CrossRef]  

18. T. Takahashi, T. Nakamura, and S. Adachi, “Blue-light-emitting ZnSe random laser,” Opt. Lett. 34(24), 3923–3925 (2009). [CrossRef]   [PubMed]  

19. C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007). [CrossRef]   [PubMed]  

20. X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007). [CrossRef]  

21. C. J. S. Matos, “Random laser action in the core of a photonic crystal fiber,” Opt. Photonics 19(12), 27 (2008).

22. A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009). [CrossRef]  

23. H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010). [CrossRef]   [PubMed]  

24. C. T. Dominguez, Y. Lacroute, D. Chaumont, M. Sacilotti, C. B. de Araújo, and A. S. Gomes, “Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement,” Opt. Express 20(16), 17380–17385 (2012). [CrossRef]   [PubMed]  

25. R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001). [CrossRef]  

26. E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006). [CrossRef]  

27. T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011). [CrossRef]   [PubMed]  

28. S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004). [CrossRef]  

29. C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005). [CrossRef]  

30. C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011). [CrossRef]  

31. B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013). [CrossRef]  

32. S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010). [CrossRef]  

33. O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006). [CrossRef]  

References

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  1. V. Letokhov, “Stimulated emission of an ensemble of scattering particles with negative absorption,” Sov. Phys. JETP 26, 835–840 (1967).
  2. N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
    [Crossref]
  3. D. Wiersma, “The smallest random laser,” Nature 406(6792), 132–135 (2000).
    [Crossref] [PubMed]
  4. D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996).
    [Crossref] [PubMed]
  5. H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
    [Crossref]
  6. D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008).
    [Crossref]
  7. L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
    [Crossref]
  8. A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
    [Crossref]
  9. M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
    [Crossref]
  10. O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
    [Crossref]
  11. C. J. De Matos, C. M. Cordeiro, E. M. Dos Santos, J. S. Ong, A. Bozolan, and C. H. Brito Cruz, “Liquid-core, liquid-cladding photonic crystal fibers,” Opt. Express 15(18), 11207–11212 (2007).
    [Crossref] [PubMed]
  12. K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
    [Crossref]
  13. H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497–10535 (2005).
    [Crossref]
  14. G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007).
    [Crossref]
  15. H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
    [Crossref]
  16. H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
    [Crossref]
  17. D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
    [Crossref]
  18. T. Takahashi, T. Nakamura, and S. Adachi, “Blue-light-emitting ZnSe random laser,” Opt. Lett. 34(24), 3923–3925 (2009).
    [Crossref] [PubMed]
  19. C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
    [Crossref] [PubMed]
  20. X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
    [Crossref]
  21. C. J. S. Matos, “Random laser action in the core of a photonic crystal fiber,” Opt. Photonics 19(12), 27 (2008).
  22. A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
    [Crossref]
  23. H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
    [Crossref] [PubMed]
  24. C. T. Dominguez, Y. Lacroute, D. Chaumont, M. Sacilotti, C. B. de Araújo, and A. S. Gomes, “Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement,” Opt. Express 20(16), 17380–17385 (2012).
    [Crossref] [PubMed]
  25. R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
    [Crossref]
  26. E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
    [Crossref]
  27. T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
    [Crossref] [PubMed]
  28. S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
    [Crossref]
  29. C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
    [Crossref]
  30. C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
    [Crossref]
  31. B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
    [Crossref]
  32. S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
    [Crossref]
  33. O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
    [Crossref]

2013 (1)

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

2012 (2)

C. T. Dominguez, Y. Lacroute, D. Chaumont, M. Sacilotti, C. B. de Araújo, and A. S. Gomes, “Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement,” Opt. Express 20(16), 17380–17385 (2012).
[Crossref] [PubMed]

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

2011 (2)

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

2010 (4)

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
[Crossref]

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

2009 (2)

T. Takahashi, T. Nakamura, and S. Adachi, “Blue-light-emitting ZnSe random laser,” Opt. Lett. 34(24), 3923–3925 (2009).
[Crossref] [PubMed]

A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
[Crossref]

2008 (2)

C. J. S. Matos, “Random laser action in the core of a photonic crystal fiber,” Opt. Photonics 19(12), 27 (2008).

D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008).
[Crossref]

2007 (4)

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

C. J. De Matos, C. M. Cordeiro, E. M. Dos Santos, J. S. Ong, A. Bozolan, and C. H. Brito Cruz, “Liquid-core, liquid-cladding photonic crystal fibers,” Opt. Express 15(18), 11207–11212 (2007).
[Crossref] [PubMed]

G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007).
[Crossref]

2006 (3)

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

2005 (4)

H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497–10535 (2005).
[Crossref]

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

2004 (1)

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

2001 (1)

R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
[Crossref]

2000 (1)

D. Wiersma, “The smallest random laser,” Nature 406(6792), 132–135 (2000).
[Crossref] [PubMed]

1999 (3)

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

1996 (1)

D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996).
[Crossref] [PubMed]

1994 (1)

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

1967 (1)

V. Letokhov, “Stimulated emission of an ensemble of scattering particles with negative absorption,” Sov. Phys. JETP 26, 835–840 (1967).

Abiyasa, A. P.

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

Adachi, S.

Anastasiadis, S. H.

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Anglos, D.

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Bahoura, M.

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

Balachandran, R. M.

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

Bergren, M. R.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Bozolan, A.

Brito Cruz, C. H.

Brito-Silva, A. M.

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

Cao, H.

H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497–10535 (2005).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Cao, J.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Cerdán, L.

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

Chang, R. P. H.

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Chaumont, D.

Chen, N. S.

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Chipouline, A.

R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
[Crossref]

Collins, R. T.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Cordeiro, C. M.

Costela, A.

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

Dahl, Ø.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Das, R. N.

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Davidov, D.

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

de Araújo, C. B.

C. T. Dominguez, Y. Lacroute, D. Chaumont, M. Sacilotti, C. B. de Araújo, and A. S. Gomes, “Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement,” Opt. Express 20(16), 17380–17385 (2012).
[Crossref] [PubMed]

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

de Matos, C. J.

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

C. J. De Matos, C. M. Cordeiro, E. M. Dos Santos, J. S. Ong, A. Bozolan, and C. H. Brito Cruz, “Liquid-core, liquid-cladding photonic crystal fibers,” Opt. Express 15(18), 11207–11212 (2007).
[Crossref] [PubMed]

de S Menezes, L.

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

Dice, G. D.

G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007).
[Crossref]

Dominguez, C. T.

Dos Santos, E. M.

Durán-Sampedro, G.

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

Elezzabi, A. Y.

G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007).
[Crossref]

Fedorov, V. V.

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

Feng, B.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Feng, S.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Fu, J.

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

Fujita, K.

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

Furtak, T. E.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Gao, M.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

García-Moreno, I.

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

Giannelis, E. P.

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Gomes, A. S.

C. T. Dominguez, Y. Lacroute, D. Chaumont, M. Sacilotti, C. B. de Araújo, and A. S. Gomes, “Microchip Random Laser based on a disordered TiO2-nanomembranes arrangement,” Opt. Express 20(16), 17380–17385 (2012).
[Crossref] [PubMed]

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

Gomes, A. S. L.

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

Grepstad, J.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Guohua Zhu,

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

Hirao, K.

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

Hng, H. H.

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Ho, S. T.

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Holmestad, R.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Jiang, X.

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

Kim, C.

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

Konishi, J.

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

Kumar, A.

A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
[Crossref]

Lacroute, Y.

Ladam, C.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Lagendijk, A.

D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996).
[Crossref] [PubMed]

Lau, S. P.

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

Lawandy, N. M.

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

Lee, H. W.

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

Leong, E.

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

Leong, E. S. P.

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Letokhov, V.

V. Letokhov, “Stimulated emission of an ensemble of scattering particles with negative absorption,” Sov. Phys. JETP 26, 835–840 (1967).

Li, X.

A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
[Crossref]

Liang, H. K.

H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
[Crossref]

Liu, H.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Martinez Gámez, M. A.

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

Martyshkin, D.

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

Matos, C. J. S.

C. J. S. Matos, “Random laser action in the core of a photonic crystal fiber,” Opt. Photonics 19(12), 27 (2008).

Matsumoto, M.

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

Mirov, S. B.

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

Morris, K. J.

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

Moskalev, I. S.

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

Murai, S.

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

Nakamura, T.

Noginov, M. A.

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

Ong, J. S.

Pang, Z.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Polson, R. C.

R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
[Crossref]

Popov, O.

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

Sacilotti, M.

Sauvain, E.

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

Seelig, E. W.

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Song, H.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Song, Q.

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

Stassinopoulos, A.

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Su, X.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Sun, Y.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Takahashi, T.

Talukder, M. A. I.

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

Tanaka, K.

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

Tomita, M.

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

Tong, L.

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

Totsuka, K.

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

Tveit, J.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Vardeny, Z. V.

R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
[Crossref]

Vullum, P. E.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Walmsley, J. C.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Wang, L.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Wang, Q. H.

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Wei, M.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Weigand, C.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Weman, H.

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

Wiersma, D.

D. Wiersma, “The smallest random laser,” Nature 406(6792), 132–135 (2000).
[Crossref] [PubMed]

Wiersma, D. S.

D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008).
[Crossref]

D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996).
[Crossref] [PubMed]

Xu, L.

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

Yan, J.

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

Yang, H.

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

Yang, H. Y.

H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
[Crossref]

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Yang, J.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Yang, L.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Yu, S.

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
[Crossref]

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

Yu, S. F.

H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
[Crossref]

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Yuen, C.

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

Zhai, H.

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

Zhai, T.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Zhang, L.

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

Zhang, X.

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Zhao, Y. G.

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

Zilbershtein, A.

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

Adv. Mater. (1)

R. C. Polson, A. Chipouline, and Z. V. Vardeny, “Random Lasing in pgr;-Conjugated Films and Infiltrated Opals,” Adv. Mater. 13(10), 760–764 (2001).
[Crossref]

Appl. Phys. B (1)

L. Cerdán, A. Costela, G. Durán-Sampedro, and I. García-Moreno, “Random lasing from sulforhodamine dye-doped polymer films with high surface roughness,” Appl. Phys. B 108(4), 839–850 (2012).
[Crossref]

Appl. Phys. Lett. (9)

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: Enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

H. K. Liang, S. F. Yu, and H. Y. Yang, “ZnO random laser diode arrays for stable single-mode operation at high power,” Appl. Phys. Lett. 97(24), 241107 (2010).
[Crossref]

E. Leong, S. F. Yu, A. P. Abiyasa, and S. P. Lau, “Polarization characteristics of ZnO rib waveguide random lasers,” Appl. Phys. Lett. 88(9), 091116 (2006).
[Crossref]

S. Murai, K. Fujita, J. Konishi, K. Hirao, and K. Tanaka, “Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution,” Appl. Phys. Lett. 97(3), 031118 (2010).
[Crossref]

O. Popov, A. Zilbershtein, and D. Davidov, “Random lasing from dye-gold nanoparticles in polymer films: enhanced gain at the surface-plasmon-resonance wavelength,” Appl. Phys. Lett. 89(19), 191116 (2006).
[Crossref]

X. Jiang, Q. Song, L. Xu, J. Fu, and L. Tong, “Microfiber knot dye laser based on the evanescent-wave-coupled gain,” Appl. Phys. Lett. 90(23), 233501 (2007).
[Crossref]

A. Kumar, S. Yu, and X. Li, “Random laser action in dielectric-metal-dielectric surface plasmon waveguides,” Appl. Phys. Lett. 95(23), 231114 (2009).
[Crossref]

S. Yu, C. Yuen, S. P. Lau, and H. W. Lee, “Zinc oxide thin-film random lasers on silicon substrate,” Appl. Phys. Lett. 84(17), 3244–3246 (2004).
[Crossref]

C. Yuen, S. F. Yu, E. S. P. Leong, H. Y. Yang, S. P. Lau, N. S. Chen, and H. H. Hng, “Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer,” Appl. Phys. Lett. 86(3), 031112 (2005).
[Crossref]

Appl. Surf. Sci. (1)

A. Stassinopoulos, R. N. Das, E. P. Giannelis, S. H. Anastasiadis, and D. Anglos, “Random lasing from surface modified films of zinc oxide nanoparticles,” Appl. Surf. Sci. 247(1-4), 18–24 (2005).
[Crossref]

Cryst. Growth Des. (1)

C. Weigand, M. R. Bergren, C. Ladam, J. Tveit, R. Holmestad, P. E. Vullum, J. C. Walmsley, Ø. Dahl, T. E. Furtak, R. T. Collins, J. Grepstad, and H. Weman, “Formation of ZnO nanosheets grown by catalyst-assisted pulsed laser deposition,” Cryst. Growth Des. 11(12), 5298–5304 (2011).
[Crossref]

J. Alloys Compd. (1)

B. Feng, J. Yang, J. Cao, L. Yang, M. Gao, M. Wei, H. Zhai, Y. Sun, and H. Song, “Growth mechanism, optical and photocatalytic properties of the ZnSe nanosheets constructed by the nanoparticles,” J. Alloys Compd. 555, 241–245 (2013).
[Crossref]

J. Opt. (1)

D. Martyshkin, V. V. Fedorov, C. Kim, I. S. Moskalev, and S. B. Mirov, “Mid-IR random lasing of Cr-doped ZnS nanocrystals,” J. Opt. 12(2), 024005 (2010).
[Crossref]

J. Opt. A (1)

G. D. Dice and A. Y. Elezzabi, “Random lasing from a nanoparticle-based metal–dielectric–dye medium,” J. Opt. A 9(2), 186–193 (2007).
[Crossref]

J. Phys. A (1)

H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497–10535 (2005).
[Crossref]

Nano Lett. (1)

T. Zhai, X. Zhang, Z. Pang, X. Su, H. Liu, S. Feng, and L. Wang, “Random laser based on waveguided plasmonic gain channels,” Nano Lett. 11(10), 4295–4298 (2011).
[Crossref] [PubMed]

Nanoscale Res. Lett. (1)

H. Yang, S. Yu, J. Yan, and L. Zhang, “Random lasing action from randomly assembled ZnS nanosheets,” Nanoscale Res. Lett. 5(5), 809–812 (2010).
[Crossref] [PubMed]

Nat. Phys. (1)

D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008).
[Crossref]

Nature (2)

N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes, and E. Sauvain, “Laser action in strongly scattering media,” Nature 368(6470), 436–438 (1994).
[Crossref]

D. Wiersma, “The smallest random laser,” Nature 406(6792), 132–135 (2000).
[Crossref] [PubMed]

Opt. Express (2)

Opt. Lett. (1)

Opt. Photonics (1)

C. J. S. Matos, “Random laser action in the core of a photonic crystal fiber,” Opt. Photonics 19(12), 27 (2008).

Phys. Rev. B (1)

K. Totsuka, M. A. I. Talukder, M. Matsumoto, and M. Tomita, “Excitation-power-dependent spectral shift in photoluminescence in dye molecules in strongly scattering optical media,” Phys. Rev. B 59(1), 50–53 (1999).
[Crossref]

Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics (1)

D. S. Wiersma and A. Lagendijk, “Light diffusion with gain and random lasers,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics 54(4), 4256–4265 (1996).
[Crossref] [PubMed]

Phys. Rev. Lett. (3)

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, and R. P. H. Chang, “Random laser action in semiconductor powder,” Phys. Rev. Lett. 82(11), 2278–2281 (1999).
[Crossref]

C. J. de Matos, L. de S Menezes, A. M. Brito-Silva, M. A. Martinez Gámez, A. S. Gomes, and C. B. de Araújo, “Random fiber laser,” Phys. Rev. Lett. 99(15), 153903 (2007).
[Crossref] [PubMed]

Quantum Electron. (1)

M. Bahoura, K. J. Morris, Guohua Zhu, and M. A. Noginov, “Dependence of the neodymium random laser threshold on the diameter of the pumped spot,” Quantum Electron. 41(5), 677–685 (2005).
[Crossref]

Sov. Phys. JETP (1)

V. Letokhov, “Stimulated emission of an ensemble of scattering particles with negative absorption,” Sov. Phys. JETP 26, 835–840 (1967).

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Figures (6)

Fig. 1
Fig. 1 Schematic illustration of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide random laser and diagram of optical experimental setup, the inset is a photograph of emission when the pump energy is above the threshold.
Fig. 2
Fig. 2 SEM images at different magnifications of ZnSe-NS grown on the surface of a quartz substrate using hydrothermal technique. The inset shows the XRD patterns of ZnSe bulk (Bottom blue line), ZnSe nanoparticle film fabricated by FPLD (Middle red line) and ZnSe-NS film (Top black line).
Fig. 3
Fig. 3 (a) Emission spectra measured along the pump stripe for different pump energy, inset in (a): emission spectra just below and above the pump threshold. (b) Evolution of emission intensity as a function of pump energy, inset in (b): three photographs of emission at different pump energy above threshold. Three lines are guides for the eyes, and circles represent two thresholds at ~20 μJ/pulse and ~53 μJ/pulse.
Fig. 4
Fig. 4 The normalized emission spectra of Silica/ZnSe-NS/PMMA-Rh6G/Silica waveguide (I), Silica/PMMA-Rh6G/Silica (II), and PMMA-Rh6G film (III), pumped at 532 nm with a fixed pumping energy. The inset is emission peak intensity of Silica/PMMA-Rh6G/Silica as a function of the pumping pulse energy.
Fig. 5
Fig. 5 The TM (a), TE (b) spectra and threshold curves (c) of Silica/ZnSe-NS/PMMA-Rh6G/ Silica waveguide, pumped at 532 nm.
Fig. 6
Fig. 6 The calculated PFT spectra of the TM and TE spectra. The inset diagrams explain the closed-loop cavity formed in the waveguide (a), F-P cavity (b) and ring cavity formed between the nanosheets.

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