Abstract

In this work, a hybrid structure consisting of a multicomponent germanate glass microsphere containing bismuth as a gain medium is proposed and presented. The bismuth-doped germanate glass microspheres were fabricated from a glass fiber tip with no precipitation of the bismuth metal. Coupling with a fiber taper, the bismuth-doped microsphere single-mode laser was observed to lase at around 1305.8 nm using 808 nm excitation. The low threshold of absorbed pump power at 215 μW makes this microlaser appealing for various applications, including tunable lasers for a range of purposes in telecommunication, biomedical, and optical information processing.

© 2017 Chinese Laser Press

1. INTRODUCTION

In recent decades, gain glass materials with ultrabroadband emission have been intensely investigated due to their various invaluable applications, such as broadband fiber amplifiers and tunable fiber lasers [1,2]. Nevertheless, most investigations in relation to luminescent glasses are confined to materials with dopants of a range of rare-earth ions, such as Yb3+, Er3+, Tm3+, and Ho3+. Owing to the shielding of the 6s and 5d orbitals, the emission wavelength is fixed, and the bandwidth can be narrow (<100  nm) due to the 4f-4f orbital transition nature of rare-earth ions, preventing wide applications of luminescent glasses at unconventional wavelengths [35]. Bismuth (Bi)-doped glasses exhibit ultrabroadband lasing emissions in the near-infrared (NIR) region ranging from 1000 to 1700 nm, and the FWHM of the luminescence can range from 200 nm to nearly 500 nm [614]. Furthermore, the NIR emission spectra of Bi-doped glasses (around 1310 nm) effectively fill up the vacant spectral region (1100–1400 nm) of traditional rare-earth-doped active glasses. These unique luminescent properties indicate that Bi-doped glasses are good candidates for an ultrabroadband lasing application at unconventional wavelengths and for tunable lasers. Previously, a novel fiber laser material based on Bi-doped silica glass emitting in the NIR region garnered a lot of attention [1522]. However, the doping concentrations of Bi in silica glass are low (normally less than 0.1 mol%), the preform is fabricated at a high temperature (about 2000°C) with heavy volatility of Bi, and the emission bandwidths of the fibers are narrower than that of Bi-doped bulk glasses. In comparison with silica glass, the doping concentrations of Bi in multicomponent glasses can be much higher, and the melting temperatures are much lower. In addition, the gain coefficients of Bi in multicomponent glasses are higher than in silica glass due to their low multiphonon relaxation rates. Therefore, Bi-doped multicomponent glass is a promising matrix for lasing applications. As far as the authors are aware, no investigation into Bi-doped multicomponent glass fiber lasers has been reported in the literature due to the high transmission loss of fibers and high pump threshold of Bi-doped multicomponent fiber laser.

Whispering gallery modes (WGMs) in glass microcavities exhibit unique properties of extremely high quality factors (up to 1010) and very small mode volumes (on the order of 100  μm3) [23,24]. The strong confinement of light makes microsphere resonators attractive as resonant cavities for laser oscillation, especially for low threshold and high pump efficiency lasers [25,26]. Therefore, microsphere resonators should also be promising for Bi-doped multicomponent glass lasers due to the unique property of the ultrahigh electromagnetic energy density. In this work, Bi-doped multicomponent germanate glass microspheres were prepared, and a Bi-doped microsphere laser in the NIR region was demonstrated. The Bi-doped multicomponent glasses were characterized using both transmission spectra and X-ray diffraction (XRD) patterns. The fluorescence luminescence of the Bi-doped glass was measured over an ultrabroadband of 1000–1700 nm wavelength range under 808 nm laser excitation. The microspheres were fabricated from glass fibers, which were drawn from melted Bi-doped germanate glass. A Bi-doped microsphere laser was generated and observed to operate in the NIR region around 1310 nm using the 808 nm excitation.

2. EXPERIMENTS

To fabricate the microspheres, we used a Bi-doped germanate glass with the compositions (mol%): 70GeO2-15Ga2O3-(15x)BaO-xBi2O3 (x=1.0, 2.0, 3.0, 3.5, and 4.0). A 30 g reagent grade stoichiometric mixture of GeO2 (99.999%), Ga2O3 (99.999%), BaCO3 (99.99%), and Bi2O3 (99.999%) was mixed thoroughly in an agate mortar and melted in a covered corundum crucible at 1350°C for 1 h. The bulk glass samples were fabricated using the melting–quenching method. The glass samples were cut and polished for measurements. Then, the germanate glass fibers were drawn from the glass melt using a diamond tip, similar to that described elsewhere [27]. The glass fibers were prepared by quickly drawing at an appropriate glass melt viscosity, which was initially cleaned ultrasonically and then using a number of hydrofluoric acid washes.

To fabricate the Bi-doped germanate microsphere, a taper from the glass fiber was first prepared by vertically suspending it on a 3D adjustable mount. A small region of the fiber was heated by a CO2 laser beam focused to about 150 μm, and we increased the power of the laser until the glass fiber rapidly elongated into a taper. We were able to control the waist diameter of the taper by adjusting the distance between the glass fiber and the laser beam; a taper diameter of about 3 μm was selected, and it was then cut into a half-taper by shining the laser at the center of the waist region. Next, we heated the tip of the half-taper by the CO2 laser beam until it was near the melting temperature of the glass. The surface tension of the glass creates a microsphere from the tip. During the heating process, the tapered fiber was moved slowly along the half-taper in order to enlarge the size of the glass microsphere. Using the described method, we made Bi-doped germanate microspheres with diameters ranging from 40 to 100 μm. Finally, the Bi-doped germanate microspheres were used as gain matrices as well as resonant cavities to realize Bi lasers.

For characterizing the absorption properties of the doped germanate glasses, the transmission spectra were measured using an ultraviolet-visible-NIR spectrophotometer (Lambda-900, PerkinElmer, USA). The amorphous state and crystalline phase in the glasses, glass fibers, and microspheres were identified by XRD patterns on a D8 advance x-ray diffractometer (Bruker, Switzerland) with Cu/Ka (λ=0.1541  nm) radiation. The photoluminescence spectra of the Bi-doped germanate glasses were measured using an FLS920 fluorescence spectrometer (Edinburgh Instruments, UK). Lasing from the Bi-doped microspheres was detected using an optical spectrum analyzer (AQ-6370C, Yokogawa, Japan).

3. EXPERIMENTAL RESULTS AND DISCUSSION

Figure 1(a) shows the measured transmission spectra for Bi-doped germanate glasses as a function of wavelength for different doping concentrations. Two characteristic absorption bands around 500 and 800 nm are observed (see highlighted regions); these are attributed to electronic transitions of Bi, as previously reported [28,29]. The absorption intensity of Bi increases monotonically as the doping concentration of Bi2O3 increases. In the 1000–2000 nm region, the transmittance of the glasses is as high as 80% when the thicknesses of the glasses are 1.5 mm.

 

Fig. 1. (a) Transmission spectra of xBi2O3-doped germanate glasses (x=1.0, 2.0, 3.0, and 4.0). The different absorption bands around 500 and 800 nm over the transmission spectra are marked by two green dashed elliptical circles. (b) Photoluminescence spectra of xBi2O3-doped germanate glasses under 808 nm excitation (x=0.0, 1.0, 2.0, 3.0, 3.5, and 4.0).

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According to the absorption properties of Bi in the glasses, as described above, the photoluminescence spectra were measured under excitation of an 808 nm laser diode. The dependence of the NIR emission intensity on the doping concentration of Bi2O3 is presented in Fig. 1(b). On excitation by 808 nm light, ultrabroadband NIR emissions are observed in the photoluminescence spectra. The center of the emission bands is located at 1280 nm, and the FWHM of the emissions is about 270 nm. The ultrabroadband emissions have been attributed to electronic transitions of low valence Bi+ or Bi clusters [3033], but the exact origin would need further investigation. Furthermore, when excited at 808 nm, the ultrabroadband emission intensity of Bi first increases as the doping concentration of Bi2O3 is increased, reaching a maximum at 3.5 mol% Bi2O3 doping, and then decreases when the Bi2O3 content is further increased. This result can be understood by considering the effect of concentration quenching of Bi due to the energy migration between Bi ions. The optimal doping concentration of Bi2O3 for NIR emission in this glass is approximately 3.5 mol%.

In terms of the experimental results mentioned above, 3.5 mol% Bi2O3 doping of the germanate glass was selected as the precursor glass for fabricating glass fibers and microspheres. The image of the Bi-doped glass fibers and microsphere is shown in Figs. 2(a) and 2(b), respectively. The diameters of the glass fibers range from 80 to 120 μm. The Bi-doped germanate glass microsphere is a solid sphere with a diameter of about 50 μm, a stem diameter of 5 μm, and a stem length of 100 μm (as measured by using optical microscopy).

 

Fig. 2. (a) Microscope images of (a) Bi-doped germanate glass fiber and (b) microsphere. (c) XRD patterns of Bi-doped germanate glass, glass fibers and microspheres.

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As previously reported by Fang et al. [34], Bi metals were easily precipitated during the rod-in-tube fiber drawing process. The transmittance and fluorescence properties of Bi-doped glass both deteriorated due to the precipitation of Bi metals, which prevents the lasing emission of Bi. For determining the amorphous state and crystalline phase in Bi-doped glasses, glass fibers, and microspheres, the XRD patterns were measured, as shown in Fig. 2(c). We see that the XRD patterns are all consistent with broad bands, attributed to the amorphous phase of the glass. There is no evidence of sharp diffraction peaks originating from the Bi metal or crystal in the observed XRD patterns. These results indicate that glass microspheres can be fabricated with relatively high optical quality due to (i) the rapid drawing speed that we used to make the glass fibers and (ii) the high temperature needed to make the microspheres. Therefore, the fabrication techniques that were used to obtain Bi-doped multicomponent glass microspheres avoid precipitation of the Bi metal, a fact that is important in order to obtain efficient Bi lasing in later experiments.

A schematic representation of the experimental apparatus used to achieve the Bi microsphere laser is shown in Fig. 3. Using a hydrogen-oxygen flame fiber pulling rig, a 1.0 μm taper was fabricated by softening and stretching a section of 780HP silica optical fiber, similar to that described elsewhere [35], and this was used to couple the 808 nm pump source light, from a single mode, tunable external cavity laser, into the microsphere using evanescent field coupling. Relative positions of the taper and sphere were observed from two directions using two 20× microscope eyepieces attached to CCD cameras. The single-mode fiber used has the distinct advantage that it can allow efficient propagation of both excitation light and lasing emission. The fiber taper was placed above the Bi-doped germanate microsphere, which was held by the fiber stem and placed toward critical coupling with the tapered fiber. The output spectrum from the Bi-doped microsphere laser was monitored using an optical spectrum analyzer.

 

Fig. 3. Experimental setup for characterizing a Bi-doped microsphere laser. An 808 nm laser diode is used as the excitation source.

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Figure 4(a) shows the WGMs obtained around 1310 nm, as measured through the fiber taper coupler. Note that the pump power is below the threshold needed for lasing in the microcavity. The Q factor was estimated to be about 2.5×105 using the well-known formula Q=λ/FWHM, where λ and FWHM are the wavelength and FWHM of a single-mode resonance peak, respectively. Lasing from the Bi-doped microsphere was observed by adjusting the position of the microsphere and approaching it to the fiber taper. Figure 4(b) shows a typical lasing spectrum (as collected from the output pigtail of the fiber taper) recorded on the optical spectrum analyzer with a limited resolution of 0.05 nm. The wavelength of the single-mode lasing peak is around 1305.8 nm. This is the first experimental report for a Bi NIR laser based on a multicomponent glass. Lasing emission from the microsphere was observed by tuning the pump wavelength to a pump band resonance of the cavity and increasing the pump power to an approximate lasing threshold of 30 mW. This threshold is overestimated because the absorbed pump power (circa 0.7% of the total input pump power of 30 mW) was calculated without accounting for losses due to scattering. Future work should focus on refining the experimental setup to allow for more precise measurements of the loss mechanisms occurring in the microsphere-fiber taper system, especially surface scattering from the microsphere, as it appears to be by far the dominant loss mechanism for the pump. To obtain a high power transfer to the cavity from the fiber taper, light coupling into the microsphere should be improved. For this work, improving the coupling coefficient of the taper-sphere system relies on the phase-matching condition, i.e., simply obtaining size matching between the microsphere resonator and the fiber taper, as discussed in Refs. [36,37]. The polarization state of the pump source was adjusted using a polarization controller. However, the exact polarization state at the coupling fiber waist could not be determined with complete certainty due to the uncertain nature of light propagation in ultrathin fibers.

 

Fig. 4. (a) WGMs observed when light is coupled into doped microsphere via the fiber taper coupler. (b) Laser emission (red curve) from the Bi-doped microsphere when the absorbed pump power reaches 215 μW. As a reference, the fluorescence spectrum from the Bi-doped multi-component glass is also shown (blue curve).

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The output laser power collected from the fiber taper as a function of estimated total pump power absorbed is presented in Fig. 5(a). Below the pump threshold power at 215 μW, the emission of the microsphere presents as spontaneous radiation. The output power was observed to be as high as 3.56 μW when the laser was operating in single-mode. In order to more precisely measure the linewidth of the single-mode laser emission, a pump laser launched from a frequency-scanned tunable laser was coupled into the microsphere via the fiber taper and a polarization controller. The frequency was repeatedly tuned over several GHz via piezo control, and the output signal was collected using a photodetector and viewed on an oscilloscope. The schematic of the experimental setup is shown in Fig. 5(c), and the trace of the Bi-doped microsphere laser output intensity recorded as the pump was scanned in frequency is presented in Fig. 5(b). From Fig. 5(b) it is clear that the linewidth is circa 0.61 GHz (3.47  pm), which could be further improved by using a narrow linewidth pump laser and/or improving the quality of the gain microsphere. The output power of the Bi-doped microsphere laser is really low compared with that of a Bi-doped fiber laser presented so far [15,16]. However, the Bi-doped microsphere laser exhibits a lower pump threshold power and a narrower laser linewidth compared with the Bi-doped fiber laser. Furthermore, the compact physical size of this Bi-doped microsphere device makes it more suitable for an integrated optical system.

 

Fig. 5. (a) Microsphere laser output power as a function of estimated absorbed pump power at 1305.8 nm. The straight red line is a linear fit to the experimental data. (b) Oscilloscope trace of the Bi-doped microsphere laser recorded as the pump is scanned in frequency. (c) Schematic of the experimental setup for the linewidth measurement of Bi laser emission.

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4. CONCLUSION

In conclusion, as a proof-of-concept, we have experimentally demonstrated a Bi-doped germanate glass microsphere laser with emissions around 1305.8 nm in a fiber tapered coupled system. Both the pump light and the lasing emission were guided through the fiber taper, providing an efficient coupling method to the microsphere cavity compared with what could be achieved using side-polished fiber or prism coupling methods. The estimated threshold pump power is 30 mW, the threshold absorbed pump power is about 215 μW, and a measured output laser power as high as circa 3.56 μW was observed with no sign of saturation. This Bi-doped multicomponent glass microsphere laser could be useful in a wide range of applications, in areas as diverse as NIR telecommunications, biomedical, or astrophysical applications, as an alternative to the more prevalent 1310 nm vertical cavity surface-emitting lasers [38].

Funding

National Natural Science Foundation of China (NSFC) (61575050); Key Program for International S&T Cooperation Projects of China (2016YFE0126500); Key Program for Natural Science Foundation of Heilongjiang Province of China (ZD2016012); 111 Project (B13015); Fundamental Research Funds of the Central University; Harbin Engineering University (HEU).

Acknowledgment

This work was supported in part by the Okinawa Institute of Science and Technology Graduate University.

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References

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  1. J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
    [Crossref]
  2. S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
    [Crossref]
  3. S. Jackson, “Towards high-power mid-infrared emission from a fibre laser,” Nat. Photonics 6, 423–431 (2012).
    [Crossref]
  4. F. Stutzki, C. Gaida, M. Gebhardt, F. Jansen, C. Jauregui, J. Limpert, and A. Tünnermann, “Tm-based fiber-laser system with more than 200  MW peak power,” Opt. Lett. 40, 9–12 (2015).
    [Crossref]
  5. Y. Tsang, B. Richards, D. Binks, J. Lousteau, and A. Jha, “Tm3+/Ho3+ codoped tellurite fiber laser,” Opt. Lett. 33, 1282–1284 (2008).
    [Crossref]
  6. Y. Fujimoto and M. Nakatsuka, “Optical amplification in bismuth-doped silica glass,” Appl. Phys. Lett. 82, 3325–3326 (2003).
    [Crossref]
  7. X. Meng, J. Qiu, M. Peng, D. Chen, Q. Zhao, X. Jiang, and C. Zhu, “Near infrared broadband emission of bismuth-doped aluminophosphate glass,” Opt. Express 13, 1628–1634 (2005).
    [Crossref]
  8. Y. Seo, Y. Fujimoto, and M. Nakatsuka, “Optical amplification in a bismuth-doped silica glass at 1300  nm telecommunications window,” Opt. Commun. 266, 169–171 (2006).
    [Crossref]
  9. Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
    [Crossref]
  10. V. Sokolov, V. Plotnichenko, and E. Dianov, “Origin of broadband near-infrared luminescence in bismuth-doped glasses,” Opt. Lett. 33, 1488–1490 (2008).
    [Crossref]
  11. S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
    [Crossref]
  12. V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
    [Crossref]
  13. Y. Fujimoto, “Bismuth doped silica glass and fiber,” Rev. Laser Eng. 38, 869–875 (2010).
    [Crossref]
  14. X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
    [Crossref]
  15. E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
    [Crossref]
  16. I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
    [Crossref]
  17. I. Bufetov and E. Dianov, “Bi-doped fiber lasers,” Laser Phys. Lett. 6, 487–504 (2009).
    [Crossref]
  18. M. Kalita, S. Yoo, and J. Sahu, “Bismuth doped fiber laser and study of unsaturable loss and pump induced absorption in laser performance,” Opt. Express 16, 21032–21038 (2008).
    [Crossref]
  19. S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
    [Crossref]
  20. E. Dianov, “Bismuth-doped optical fibers: a challenging active medium for near-IR lasers and optical amplifiers,” Light Sci. Appl. 1, e12 (2012).
    [Crossref]
  21. T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
    [Crossref]
  22. I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
    [Crossref]
  23. M. Gorodetsky, A. Savchenkov, and V. Ilchenko, “Ultimate Q of optical microsphere resonators,” Opt. Lett. 21, 453–455 (1996).
    [Crossref]
  24. T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
    [Crossref]
  25. S. Spillane, T. Kippenberg, and K. Vahala, “Ultralow-threshold Raman laser using a spherical dielectric microcavity,” Nature 415, 621–623 (2002).
    [Crossref]
  26. Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
    [Crossref]
  27. L. Tong, L. Hu, J. Zhang, J. Qiu, Q. Yang, J. Lou, Y. Shen, J. He, and Z. Ye, “Photonic nanowires directly drawn from bulk glasses,” Opt. Express 14, 82–87 (2006).
    [Crossref]
  28. S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
    [Crossref]
  29. Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
    [Crossref]
  30. M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Broadband infrared luminescence from Li2O-Al2O3-ZnO-SiO2 glasses doped with Bi2O3,” Opt. Express 13, 6892–6898 (2005).
    [Crossref]
  31. N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
    [Crossref]
  32. M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Superbroadband 1310  nm emission from bismuth and tantalum codoped germanium oxide glasses,” Opt. Lett. 30, 2433–2435 (2005).
    [Crossref]
  33. J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
    [Crossref]
  34. Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
    [Crossref]
  35. J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
    [Crossref]
  36. A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
    [Crossref]
  37. H. Hattori, Z. Li, D. Liu, I. Rukhlenko, and M. Premaratne, “Coupling of light from microdisk lasers into plasmonic nano-antennas,” Opt. Express 17, 20878–20884 (2009).
    [Crossref]
  38. V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
    [Crossref]

2016 (3)

T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
[Crossref]

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

2015 (1)

2014 (2)

J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
[Crossref]

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

2013 (1)

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

2012 (3)

S. Jackson, “Towards high-power mid-infrared emission from a fibre laser,” Nat. Photonics 6, 423–431 (2012).
[Crossref]

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

E. Dianov, “Bismuth-doped optical fibers: a challenging active medium for near-IR lasers and optical amplifiers,” Light Sci. Appl. 1, e12 (2012).
[Crossref]

2011 (2)

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

2010 (2)

Y. Fujimoto, “Bismuth doped silica glass and fiber,” Rev. Laser Eng. 38, 869–875 (2010).
[Crossref]

Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
[Crossref]

2009 (2)

2008 (5)

M. Kalita, S. Yoo, and J. Sahu, “Bismuth doped fiber laser and study of unsaturable loss and pump induced absorption in laser performance,” Opt. Express 16, 21032–21038 (2008).
[Crossref]

V. Sokolov, V. Plotnichenko, and E. Dianov, “Origin of broadband near-infrared luminescence in bismuth-doped glasses,” Opt. Lett. 33, 1488–1490 (2008).
[Crossref]

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

Y. Tsang, B. Richards, D. Binks, J. Lousteau, and A. Jha, “Tm3+/Ho3+ codoped tellurite fiber laser,” Opt. Lett. 33, 1282–1284 (2008).
[Crossref]

2007 (3)

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

2006 (3)

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

L. Tong, L. Hu, J. Zhang, J. Qiu, Q. Yang, J. Lou, Y. Shen, J. He, and Z. Ye, “Photonic nanowires directly drawn from bulk glasses,” Opt. Express 14, 82–87 (2006).
[Crossref]

Y. Seo, Y. Fujimoto, and M. Nakatsuka, “Optical amplification in a bismuth-doped silica glass at 1300  nm telecommunications window,” Opt. Commun. 266, 169–171 (2006).
[Crossref]

2005 (5)

2004 (1)

T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
[Crossref]

2003 (1)

Y. Fujimoto and M. Nakatsuka, “Optical amplification in bismuth-doped silica glass,” Appl. Phys. Lett. 82, 3325–3326 (2003).
[Crossref]

2002 (1)

S. Spillane, T. Kippenberg, and K. Vahala, “Ultralow-threshold Raman laser using a spherical dielectric microcavity,” Nature 415, 621–623 (2002).
[Crossref]

1998 (1)

J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
[Crossref]

1996 (1)

1993 (1)

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Ahmad, H.

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

Arai, Y.

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

Babin, S.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Berseth, C.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Bi, G.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Bigot, L.

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Binks, D.

Bouwmans, G.

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Bufetov, I.

I. Bufetov and E. Dianov, “Bi-doped fiber lasers,” Laser Phys. Lett. 6, 487–504 (2009).
[Crossref]

Caliman, A.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Chen, D.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Superbroadband 1310  nm emission from bismuth and tantalum codoped germanium oxide glasses,” Opt. Lett. 30, 2433–2435 (2005).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Broadband infrared luminescence from Li2O-Al2O3-ZnO-SiO2 glasses doped with Bi2O3,” Opt. Express 13, 6892–6898 (2005).
[Crossref]

X. Meng, J. Qiu, M. Peng, D. Chen, Q. Zhao, X. Jiang, and C. Zhu, “Near infrared broadband emission of bismuth-doped aluminophosphate glass,” Opt. Express 13, 1628–1634 (2005).
[Crossref]

Cho, B.

J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
[Crossref]

Chong, W.

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

Dianov, E.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
[Crossref]

E. Dianov, “Bismuth-doped optical fibers: a challenging active medium for near-IR lasers and optical amplifiers,” Light Sci. Appl. 1, e12 (2012).
[Crossref]

I. Bufetov and E. Dianov, “Bi-doped fiber lasers,” Laser Phys. Lett. 6, 487–504 (2009).
[Crossref]

V. Sokolov, V. Plotnichenko, and E. Dianov, “Origin of broadband near-infrared luminescence in bismuth-doped glasses,” Opt. Lett. 33, 1488–1490 (2008).
[Crossref]

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

Dong, G.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

Dong, H.

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Douay, M.

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Dvoyrin, V.

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

Fang, Z.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Favre, A.

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Felten, J.

J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
[Crossref]

Feng, G.

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Firstov, S.

T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
[Crossref]

Fujimoto, Y.

Y. Fujimoto, “Bismuth doped silica glass and fiber,” Rev. Laser Eng. 38, 869–875 (2010).
[Crossref]

Y. Seo, Y. Fujimoto, and M. Nakatsuka, “Optical amplification in a bismuth-doped silica glass at 1300  nm telecommunications window,” Opt. Commun. 266, 169–171 (2006).
[Crossref]

Y. Fujimoto and M. Nakatsuka, “Optical amplification in bismuth-doped silica glass,” Appl. Phys. Lett. 82, 3325–3326 (2003).
[Crossref]

Gaida, C.

Gebhardt, M.

Glass, J.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Gorodetsky, M.

Guo, X.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Gur’yanov, A.

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

Hao, J.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

Harun, S.

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

Hattori, H.

He, J.

Hirao, K.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Hong, Z.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Hu, L.

Iakovlev, V.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Ilchenko, V.

Jackson, S.

S. Jackson, “Towards high-power mid-infrared emission from a fibre laser,” Nat. Photonics 6, 423–431 (2012).
[Crossref]

Jansen, F.

Jauregui, C.

Jha, A.

Jiang, N.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

Jiang, X.

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

X. Meng, J. Qiu, M. Peng, D. Chen, Q. Zhao, X. Jiang, and C. Zhu, “Near infrared broadband emission of bismuth-doped aluminophosphate glass,” Opt. Express 13, 1628–1634 (2005).
[Crossref]

Kablukov, S.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Kalita, M.

Kapon, E.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Khonthon, S.

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

Kippenberg, T.

T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
[Crossref]

S. Spillane, T. Kippenberg, and K. Vahala, “Ultralow-threshold Raman laser using a spherical dielectric microcavity,” Nature 415, 621–623 (2002).
[Crossref]

Lakshminarayana, G.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

Le, V.

J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
[Crossref]

Lerouge, A.

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

Levi, A.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Li, C.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Li, H.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Li, Z.

Limpert, J.

Liu, D.

Liu, J.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Lobach, I.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Logan, R.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Lou, J.

Lousteau, J.

Ma, Z.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Maimaiti, A.

J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
[Crossref]

Mashinsky, V.

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

McCall, S.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Melkumov, M.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Meng, X.

Mereuta, A.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Mermet, A.

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

Mircea, A.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Miura, K.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Morimoto, S.

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

Nakatsuka, M.

Y. Seo, Y. Fujimoto, and M. Nakatsuka, “Optical amplification in a bismuth-doped silica glass at 1300  nm telecommunications window,” Opt. Commun. 266, 169–171 (2006).
[Crossref]

Y. Fujimoto and M. Nakatsuka, “Optical amplification in bismuth-doped silica glass,” Appl. Phys. Lett. 82, 3325–3326 (2003).
[Crossref]

Nic Chormaic, S.

J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
[Crossref]

Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
[Crossref]

Nordine, P.

J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
[Crossref]

Norizan, S.

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

Noronen, T.

T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
[Crossref]

Ohishi, Y.

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

Okhotnikov, O.

T. Noronen, S. Firstov, E. Dianov, and O. Okhotnikov, “1700  nm dispersion managed mode-locked bismuth fiber laser,” Sci. Rep. 6, 24876 (2016).
[Crossref]

Pearton, S.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Peng, M.

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Superbroadband 1310  nm emission from bismuth and tantalum codoped germanium oxide glasses,” Opt. Lett. 30, 2433–2435 (2005).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Broadband infrared luminescence from Li2O-Al2O3-ZnO-SiO2 glasses doped with Bi2O3,” Opt. Express 13, 6892–6898 (2005).
[Crossref]

X. Meng, J. Qiu, M. Peng, D. Chen, Q. Zhao, X. Jiang, and C. Zhu, “Near infrared broadband emission of bismuth-doped aluminophosphate glass,” Opt. Express 13, 1628–1634 (2005).
[Crossref]

Peng, W.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Plotnichenko, V.

Podivilov, E.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Premaratne, M.

Pureur, V.

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Qiu, J.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

L. Tong, L. Hu, J. Zhang, J. Qiu, Q. Yang, J. Lou, Y. Shen, J. He, and Z. Ye, “Photonic nanowires directly drawn from bulk glasses,” Opt. Express 14, 82–87 (2006).
[Crossref]

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Superbroadband 1310  nm emission from bismuth and tantalum codoped germanium oxide glasses,” Opt. Lett. 30, 2433–2435 (2005).
[Crossref]

M. Peng, J. Qiu, D. Chen, X. Meng, and C. Zhu, “Broadband infrared luminescence from Li2O-Al2O3-ZnO-SiO2 glasses doped with Bi2O3,” Opt. Express 13, 6892–6898 (2005).
[Crossref]

X. Meng, J. Qiu, M. Peng, D. Chen, Q. Zhao, X. Jiang, and C. Zhu, “Near infrared broadband emission of bismuth-doped aluminophosphate glass,” Opt. Express 13, 1628–1634 (2005).
[Crossref]

Razdobreev, I.

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Ren, J.

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

Richards, B.

Rudra, A.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Rukhlenko, I.

Sahu, J.

Savchenkov, A.

Seo, Y.

Y. Seo, Y. Fujimoto, and M. Nakatsuka, “Optical amplification in a bismuth-doped silica glass at 1300  nm telecommunications window,” Opt. Commun. 266, 169–171 (2006).
[Crossref]

Sharafudeen, K.

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

Shen, Y.

Skvortsov, M.

I. Lobach, S. Kablukov, M. Skvortsov, E. Podivilov, M. Melkumov, S. Babin, and E. Dianov, “Narrowband random lasing in a bismuth-doped active fiber,” Sci. Rep. 6, 30083 (2016).
[Crossref]

Slusher, R.

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

Sokolov, V.

Spillane, S.

T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
[Crossref]

S. Spillane, T. Kippenberg, and K. Vahala, “Ultralow-threshold Raman laser using a spherical dielectric microcavity,” Nature 415, 621–623 (2002).
[Crossref]

Stutzki, F.

Su, L.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Suruceanu, G.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Suzuki, T.

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

Syrbu, A.

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

Tong, L.

Truong, V.

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

Tsang, Y.

Tünnermann, A.

Umnikov, A.

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

Vahala, K.

T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
[Crossref]

S. Spillane, T. Kippenberg, and K. Vahala, “Ultralow-threshold Raman laser using a spherical dielectric microcavity,” Nature 415, 621–623 (2002).
[Crossref]

Ward, J.

J. Ward, A. Maimaiti, V. Le, and S. Nic Chormaic, “Contributed review: optical micro-and nanofiber pulling rig,” Rev. Sci. Instrum. 85, 111501 (2014).
[Crossref]

Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
[Crossref]

Weber, J.

J. Weber, J. Felten, B. Cho, and P. Nordine, “Glass fibres of pure and erbium-or neodymium-doped yttria-alumina compositions,” Nature 393, 769–771 (1998).
[Crossref]

Wu, Y.

Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
[Crossref]

Xu, B.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Xu, J.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Yang, G.

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

Yang, H.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Yang, L.

J. Ren, L. Yang, J. Qiu, D. Chen, X. Jiang, and C. Zhu, “Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses,” Solid State Commun. 140, 38–41 (2006).
[Crossref]

Yang, Q.

Yashkov, M.

E. Dianov, V. Dvoyrin, V. Mashinsky, A. Umnikov, M. Yashkov, and A. Gur’yanov, “CW bismuth fibre laser,” Quantum Electron. 35, 1083–1084 (2005).
[Crossref]

Ye, S.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

Ye, Z.

Yoo, S.

Yu, P.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Zeng, H.

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Zhang, H.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Zhang, J.

Zhang, N.

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

Zhao, H.

X. Guo, H. Li, L. Su, P. Yu, H. Zhao, J. Liu, and J. Xu, “Near-infrared broadband luminescence in Bi2O3-GeO2 binary glass system,” Laser Phys. 21, 901–905 (2011).
[Crossref]

Zhao, Q.

Zhao, Y.

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

Zheng, J.

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

Zheng, S.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

Zhou, S.

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Zhu, B.

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

Zhu, C.

Adv. Funct. Mater. (2)

S. Zhou, C. Li, G. Yang, G. Bi, B. Xu, Z. Hong, K. Miura, K. Hirao, and J. Qiu, “Self-limited nanocrystallization-mediated activation of semiconductor nanocrystal in an amorphous solid,” Adv. Funct. Mater. 23, 5436–5443 (2013).
[Crossref]

S. Zhou, N. Jiang, B. Zhu, H. Yang, S. Ye, G. Lakshminarayana, J. Hao, and J. Qiu, “Multifunctional bismuth-doped nanoporous silica glass: from blue-green, orange, red, and white light sources to ultra-broadband infrared amplifiers,” Adv. Funct. Mater. 18, 1407–1413 (2008).
[Crossref]

Appl. Phys. Lett. (7)

V. Truong, L. Bigot, A. Lerouge, M. Douay, and I. Razdobreev, “Study of thermal stability and luminescence quenching properties of bismuth-doped silicate glasses for fiber laser applications,” Appl. Phys. Lett. 92, 041908 (2008).
[Crossref]

Y. Arai, T. Suzuki, Y. Ohishi, S. Morimoto, and S. Khonthon, “Ultrabroadband near-infrared emission from a colorless bismuth-doped glass,” Appl. Phys. Lett. 90, 261110 (2007).
[Crossref]

I. Razdobreev, L. Bigot, V. Pureur, A. Favre, G. Bouwmans, and M. Douay, “Efficient all-fiber bismuth-doped laser,” Appl. Phys. Lett. 90, 031103 (2007).
[Crossref]

Y. Fujimoto and M. Nakatsuka, “Optical amplification in bismuth-doped silica glass,” Appl. Phys. Lett. 82, 3325–3326 (2003).
[Crossref]

T. Kippenberg, S. Spillane, and K. Vahala, “Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip,” Appl. Phys. Lett. 85, 6113–6115 (2004).
[Crossref]

S. Zhou, H. Dong, H. Zeng, G. Feng, H. Yang, B. Zhu, and J. Qiu, “Broadband optical amplification in Bi-doped germanium silicate glass,” Appl. Phys. Lett. 91, 061919 (2007).
[Crossref]

A. Levi, R. Slusher, S. McCall, J. Glass, S. Pearton, and R. Logan, “Directional light coupling from microdisk lasers,” Appl. Phys. Lett. 62, 561–563 (1993).
[Crossref]

IEEE Photon. Technol. Lett. (2)

S. Norizan, W. Chong, S. Harun, and H. Ahmad, “O-band bismuth-doped fiber amplifier with double-pass configuration,” IEEE Photon. Technol. Lett. 23, 1860–1862 (2011).
[Crossref]

V. Iakovlev, G. Suruceanu, A. Caliman, A. Mereuta, A. Mircea, C. Berseth, A. Syrbu, A. Rudra, and E. Kapon, “High-performance single-mode VCSELs in the 1310-nm waveband,” IEEE Photon. Technol. Lett. 17, 947–949 (2005).
[Crossref]

J. Am. Ceram. Soc. (2)

Z. Fang, S. Zheng, W. Peng, H. Zhang, Z. Ma, G. Dong, S. Zhou, D. Chen, and J. Qiu, “Bismuth-doped multicomponent optical fiber fabricated by melt-in-tube method,” J. Am. Ceram. Soc. 99, 856–859 (2016).
[Crossref]

N. Zhang, K. Sharafudeen, G. Dong, M. Peng, and J. Qiu, “Mixed network effect of broadband near-infrared emission in Bi-doped B2O3-GeO2 glasses,” J. Am. Ceram. Soc. 95, 3842–3846 (2012).
[Crossref]

J. Appl. Phys. (1)

Y. Wu, J. Ward, and S. Nic Chormaic, “Ultralow threshold green lasing and optical bistability in ZBNA (ZrF4-BaF2-NaF-AlF3) microspheres,” J. Appl. Phys. 107, 033103 (2010).
[Crossref]

J. Mater. Chem. C (1)

Y. Zhao, M. Peng, A. Mermet, J. Zheng, and J. Qiu, “Precise frequency shift of NIR luminescence from bismuth-doped Ta2O5-GeO2 glass via composition modulation,” J. Mater. Chem. C 2, 7830–7835 (2014).
[Crossref]

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Figures (5)

Fig. 1.
Fig. 1. (a) Transmission spectra of x Bi 2 O 3 -doped germanate glasses ( x = 1.0 , 2.0, 3.0, and 4.0). The different absorption bands around 500 and 800 nm over the transmission spectra are marked by two green dashed elliptical circles. (b) Photoluminescence spectra of x Bi 2 O 3 -doped germanate glasses under 808 nm excitation ( x = 0.0 , 1.0, 2.0, 3.0, 3.5, and 4.0).
Fig. 2.
Fig. 2. (a) Microscope images of (a) Bi-doped germanate glass fiber and (b) microsphere. (c) XRD patterns of Bi-doped germanate glass, glass fibers and microspheres.
Fig. 3.
Fig. 3. Experimental setup for characterizing a Bi-doped microsphere laser. An 808 nm laser diode is used as the excitation source.
Fig. 4.
Fig. 4. (a) WGMs observed when light is coupled into doped microsphere via the fiber taper coupler. (b) Laser emission (red curve) from the Bi-doped microsphere when the absorbed pump power reaches 215 μW. As a reference, the fluorescence spectrum from the Bi-doped multi-component glass is also shown (blue curve).
Fig. 5.
Fig. 5. (a) Microsphere laser output power as a function of estimated absorbed pump power at 1305.8 nm. The straight red line is a linear fit to the experimental data. (b) Oscilloscope trace of the Bi-doped microsphere laser recorded as the pump is scanned in frequency. (c) Schematic of the experimental setup for the linewidth measurement of Bi laser emission.

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