Abstract

Dye-doped nematic liquid crystals support random lasing under optical pumping, as well as reorientational optical spatial solitons acting as all-optical waveguides. By synergistically combining these two responses in a collinear pump-soliton geometry, the resulting soliton-enhanced random laser exhibits higher conversion efficiency and better directional properties. After a short account on random lasers and solitons in nematic liquid crystals–nematicons–we describe our experimental results on nematicon-molded random lasers.

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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References

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2018 (5)

U. A. Laudyn, A. Piccardi, M. Kwasny, M. A. Karpierz, and G. Assanto, “Thermo-optic soliton routing in nematic liquid crystals,” Opt. Lett. 43(10), 2296–2299 (2018).
[Crossref] [PubMed]

A. Safdar, Y. Wang, and T. F. Krauss, “Random lasing in uniform perovskite thin films,” Opt. Express 26(2), A75–A84 (2018).
[Crossref] [PubMed]

S. Perumbilavil, A. Piccardi, R. Barboza, O. Buchnev, M. Kauranen, G. Strangi, and G. Assanto, “Beaming random lasers with soliton control,” Nat. Commun. 9(1), 3863 (2018).
[Crossref] [PubMed]

S. Perumbilavil, M. Kauranen, and G. Assanto, “Near-infrared switching of light-guided random laser,” IEEE Photonics J. 10(5), 6100907 (2018).
[Crossref]

S. Perumbilavil, M. Kauranen, and G. Assanto, “Magnetic steering of directional random laser in soft matter,” Appl. Phys. Lett. 113, 121107 (2018).
[Crossref]

2017 (6)

S. Perumbilavil, A. Piccardi, O. Buchnev, M. Kauranen, G. Strangi, and G. Assanto, “All-optical guided-wave random laser in nematic liquid crystals,” Opt. Express 25(5), 4672–4679 (2017).
[Crossref] [PubMed]

Y. Izdebskaya, V. Shvedov, G. Assanto, and W. Krolikowski, “Magnetic routing of light-induced waveguides,” Nat. Commun. 8, 14452 (2017).
[Crossref] [PubMed]

X. J. Guo, Y. F. Wang, Y. F. Jia, and W. H. Zheng, “Electrically-driven spectrally-broadened random lasing based on disordered photonic crystal structures,” Appl. Phys. Lett. 111(3), 031113 (2017).
[Crossref]

B. Abaie, E. Mobini, S. Karbasi, T. Hawkins, J. Ballato, and A. Mafi, “Random lasing in an Anderson localizing optical fiber,” Light Sci. Appl. 6(8), e17041 (2017).
[Crossref] [PubMed]

U. A. Laudyn, M. Kwaśny, F. A. Sala, M. A. Karpierz, N. F. Smyth, and G. Assanto, “Curved optical solitons subject to transverse acceleration in reorientational soft matter,” Sci. Rep. 7(1), 12385 (2017).
[Crossref] [PubMed]

N. Karimi, M. Virkki, A. Alberucci, O. Buchnev, M. Kauranen, A. Priimagi, and G. Assanto, “Molding optical waveguides with nematicons,” Adv. Opt. Mat. Commun. 5(14), 1700199 (2017).
[Crossref]

2016 (4)

2015 (2)

2014 (5)

A. Piccardi, A. Alberucci, N. Kravets, O. Buchnev, and G. Assanto, “Power-controlled transition from standard to negative refraction in reorientational soft matter,” Nat. Commun. 5(1), 5533–5541 (2014).
[Crossref] [PubMed]

N. Kravets, A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, and G. Assanto, “Bistability with Optical Beams Propagating in a reorientational medium,” Phys. Rev. Lett. 113(2), 023901 (2014).
[Crossref] [PubMed]

Y. V. Izdebskaya, “Routing of spatial solitons by interaction with rod microelectrodes,” Opt. Lett. 39(6), 1681–1684 (2014).
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A. Camposeo, P. Del Carro, L. Persano, K. Cyprych, A. Szukalski, L. Sznitko, J. Mysliwiec, and D. Pisignano, “Physically transient photonics: random versus distributed feedback lasing based on nanoimprinted DNA,” ACS Nano 8(10), 10893–10898 (2014).
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H. Bian, F. Yao, H. Liu, F. Huang, Y. Pei, C. Hou, and X. Sun, “Optically controlled random lasing based on photothermal effect in dye-doped nematic liquid crystals,” Liq. Cryst. 41(10), 1436–1441 (2014).
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2013 (1)

2012 (2)

M. Peccianti and G. Assanto, “Nematicons,” Phys. Rep. 516(4-5), 147–208 (2012).
[Crossref]

M. Leonetti, C. Conti, and C. Lopez, “Random laser tailored by directional stimulated emission,” Phys. Rev. A 85(4), 043841 (2012).
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2011 (1)

A. Smuk, E. Lazar, L. P. Olson, and N. M. Lawandy, “Random laser action in bovine semen,” Opt. Commun. 284(5), 1257–1258 (2011).
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2010 (7)

A. Tulek, R. C. Polson, and Z. V. Vardeny, “Naturally occurring resonators in random lasing of -conjugated polymer film,” Nat. Phys. 6(4), 303–310 (2010).
[Crossref]

A. Piccardi, A. Alberucci, U. Bortolozzo, S. Residori, and G. Assanto, “Readdressable interconnects with spatial soliton waveguides in liquid crystal light valves,” Photon. Techn. Lett. 22(10), 694–696 (2010).
[Crossref]

A. Piccardi, A. Alberucci, and G. Assanto, “Power-dependent nematicon steering via walk-off,” J. Opt. Soc. Am. B 27(11), 2398–2404 (2010).
[Crossref]

A. Piccardi, A. Alberucci, and G. Assanto, “Self-turning self-confined light beams in guest-host media,” Phys. Rev. Lett. 104(21), 213904 (2010).
[Crossref] [PubMed]

M. Peccianti, A. Pasquazi, G. Assanto, and R. Morandotti, “Enhancement of third-harmonic generation in nonlocal spatial solitons,” Opt. Lett. 35(20), 3342–3344 (2010).
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C. R. Lee, S. H. Lin, C. H. Guo, S. H. Chang, T. S. Mo, and S. C. Chu, “All-optically controllable random laser based on a dye-doped polymer-dispersed liquid crystal with nano-sized droplets,” Opt. Express 18(3), 2406–2412 (2010).
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S. K. Turitsyn, S. A. Babin, A. E. El-Taher, P. Harper, D. V. Churkin, S. I. Kablukov, J. D. Ania-Castañón, V. Karalekas, and E. V. Podivilov, “Random distributed feedback fibre laser,” Nat. Photonics 4(4), 231–235 (2010).
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2009 (7)

N. Lizárraga, N. P. Puente, E. I. Chaikina, T. A. Leskova, and E. R. Méndez, “Single-mode Er-doped fiber random laser with distributed Bragg grating feedback,” Opt. Express 17(2), 395–404 (2009).
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S. Ferjani, A. De Luca, V. Barna, C. Versace, and G. Strangi, “Thermo-recurrent nematic random laser,” Opt. Express 17(3), 2042–2047 (2009).
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I. B. Burgess, M. Peccianti, G. Assanto, and R. Morandotti, “Accessible light bullets via Synergetic Nonlinearities,” Phys. Rev. Lett. 102(20), 203903 (2009).
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A. Piccardi, M. Peccianti, G. Assanto, A. Dyadyusha, and M. Kaczmarek, “Voltage-driven in-plane steering of nematicons,” Appl. Phys. Lett. 94(9), 091106 (2009).
[Crossref]

G. Assanto and M. Karpierz, “Nematicons: self-localized beams in nematic liquid crystals,” Liq. Cryst. 36(10-11), 1161–1172 (2009).
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I. C. Khoo, “Nonlinear optics of liquid crystalline materials,” Phys. Rep. 471(5-6), 221–267 (2009).
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J. Fallert, R. J. B. Dietz, J. Sartor, D. Schneider, C. Klingshirn, and H. Kalt, “Co-existence of strongly and weakly localized random laser modes,” Nat. Photonics 3(5), 279–282 (2009).
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2008 (4)

D. S. Wiersma, “The physics and applications of random lasers,” Nat. Phys. 4(5), 359–367 (2008).
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M. Warenghem, J. Blach, and J. F. Henninot, “Thermo-nematicon: an unnatural coexistence of solitons in liquid crystals?” J. Opt. Soc. Am. B 25(11), 1882–1887 (2008).
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S. Ferjani, L. Sorriso-Valvo, A. De Luca, V. Barna, R. De Marco, and G. Strangi, “Statistical analysis of random lasing emission properties in nematic liquid crystals,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 78(1), 011707 (2008).
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S. Ferjani, V. Barna, A. De Luca, C. Versace, and G. Strangi, “Random lasing in freely suspended dye-doped nematic liquid crystals,” Opt. Lett. 33(6), 557–559 (2008).
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2007 (7)

C. J. S. 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).
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A. Fratalocchi, A. Piccardi, M. Peccianti, and G. Assanto, “Nonlinearly controlled angular momentum of soliton clusters,” Opt. Lett. 32(11), 1447–1449 (2007).
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M. Peccianti and G. Assanto, “Nematicons across interfaces: anomalous refraction and reflection of solitons in liquid Crystals,” Opt. Express 15(13), 8021–8028 (2007).
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A. Alberucci, M. Peccianti, and G. Assanto, “Nonlinear bouncing of nonlocal spatial solitons at the boundaries,” Opt. Lett. 32(19), 2795–2797 (2007).
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S. Mujumdar, V. Turck, R. Torre, and D. S. Wiersma, “Chaotic behavior of a random laser with static disorder,” Phys. Rev. A 76(3), 033807 (2007).
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K. L. van der Molen, R. W. Tjerkstra, A. P. Mosk, and A. Lagendijk, “Spatial Extent of Random Laser Modes,” Phys. Rev. Lett. 98(14), 143901 (2007).
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G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, and R. Bartolino, “Random lasing in dye doped nematic liquid crystals: the role of confinement geometry,” SPIE 6587, 65870P (2007), doi:.
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2006 (6)

S. Ferjani, V. Barna, A. De Luca, N. Scaramuzza, C. Versace, C. Umeton, R. Bartolino, and G. Strangi, “Thermal behavior of random lasing in dye doped nematic liquid crystals,” Appl. Phys. Lett. 89(12), 121109 (2006).
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G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, R. Bartolino, and R. Bartolino, “Random lasing and weak localization of light in dye-doped nematic liquid crystals,” Opt. Express 14(17), 7737–7744 (2006).
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G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, and R. Bartolino, “Random lasing and weak localization of light in dye-doped nematic liquid crystals,” Opt. Express 14(17), 7737–7744 (2006).
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J. Beeckman, K. Neyts, and M. Haeltermann, “Patterned electrode steering of nematicons,” J. Opt. A, Pure Appl. Opt. 8(2), 214–220 (2006).
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M. Peccianti, A. Dyadyusha, M. Kaczmarek, and G. Assanto, “Tunable refraction and reflection of self-confined light beams,” Nat. Phys. 2(11), 737–742 (2006).
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X. Wu, W. Fang, A. Yamilov, A. A. Chabanov, A. A. Asatryan, L. C. Botten, and H. Cao, “Random lasing in weakly scattering systems,” Phys. Rev. A 74(5), 053812 (2006).
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2005 (4)

A. Alberucci, M. Peccianti, G. Assanto, G. Coschignano, A. De Luca, and C. Umeton, “Self-healing generation of spatial solitons in liquid crystals,” Opt. Lett. 30(11), 1381–1383 (2005).
[Crossref] [PubMed]

A. Pasquazi, A. Alberucci, M. Peccianti, and G. Assanto, “Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals,” Appl. Phys. Lett. 87(26), 261104 (2005).
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X. Hutsebaut, C. Carbournac, M. Haelterman, J. Beeckman, and K. Neyts, “Measurement of the self-induced waveguide of a solitonlike optical beam in a nematic liquid crystal,” J. Opt. Soc. Am. B 22(7), 1424–1431 (2005).
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V. Milner and A. Z. Genack, “Photon Localization Laser: Low-Threshold Lasing in a Random Amplifying Layered Medium via Wave Localization,” Phys. Rev. Lett. 94(7), 073901 (2005).
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2004 (5)

V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Almost localized photon modes in continuous and discrete models of disordered media,” J. Opt. Soc. Am. B 21(1), 132–140 (2004).
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S. Mujumdar, M. Ricci, R. Torre, and D. S. Wiersma, “Amplified Extended Modes in Random Lasers,” Phys. Rev. Lett. 93(5), 053903 (2004).
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R. C. Polson and Z. V. Vardeny, “Random lasing in human tissues,” Appl. Phys. Lett. 85(7), 1289–1291 (2004).
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M. Peccianti, C. Conti, G. Assanto, A. De Luca, and C. Umeton, “Routing of Anisotropic Spatial Solitons and Modulational Instability in liquid crystals,” Nature 432(7018), 733–737 (2004).
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M. Peccianti, A. Fratalocchi, and G. Assanto, “Transverse dynamics of nematicons,” Opt. Express 12(26), 6524–6529 (2004).
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2003 (3)

C. Conti, M. Peccianti, and G. Assanto, “Route to nonlocality and observation of accessible solitons,” Phys. Rev. Lett. 91(7), 073901 (2003).
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A. A. Chabanov, Z. Q. Zhang, and A. Z. Genack, “Breakdown of Diffusion in Dynamics of Extended Waves in Mesoscopic Media,” Phys. Rev. Lett. 90(20), 203903 (2003).
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M. Patra, “Decay rate distributions of disordered slabs and application to random lasers,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 67(1), 016603 (2003).
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2002 (5)

M. Bahoura, K. J. Morris, and M. A. Noginov, “Threshold and slope efficiency of Nd0.5La0.5Al3 (BO3)4 ceramic random laser: effect of the pumped spot size,” Opt. Commun. 201(4–6), 405–411 (2002).
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V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Random Resonators and Prelocalized Modes in Disordered Dielectric Films,” Phys. Rev. Lett. 89(1), 016802 (2002).
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V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Random Resonators and Prelocalized Modes in Disordered Dielectric Films,” Phys. Rev. Lett. 89(1), 016802 (2002).
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M. Peccianti and G. Assanto, “Nematic Liquid Crystals: a suitable medium for self-confinement of coherent and incoherent light,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 65(3), 035603 (2002).
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M. Peccianti, C. Conti, G. Assanto, A. De Luca, and C. Umeton, “All Optical Switching and Logic Gating with Spatial Solitons in Liquid Crystals,” Appl. Phys. Lett. 81(18), 3335–3337 (2002).
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2001 (4)

M. Peccianti and G. Assanto, “Signal readdressing by steering of spatial solitons in bulk nematic liquid crystals,” Opt. Lett. 26(21), 1690–1692 (2001).
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D. S. Wiersma and S. Cavalieri, “A temperature-tunable random laser,” Nature 414(6865), 708–709 (2001).
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H. Cao, Y. Ling, J. Y. Xu, C. Q. Cao, and P. Kumar, “Photon Statistics of Random Lasers with Resonant Feedback,” Phys. Rev. Lett. 86(20), 4524–4527 (2001).
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G. R. Williams, S. B. Bayram, S. C. Rand, T. Hinklin, and R. M. Laine, “Laser action in strongly scattering rare-earth-metal-doped dielectric nanophosphors,” Phys. Rev. A 65(1), 013807 (2001).
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2000 (1)

H. Cao, J. Y. Xu, D. Z. Zhang, S. Chang, S. T. Ho, E. W. Seelig, X. Liu, and R. P. H. Chang, “Spatial Confinement of Laser Light in Active Random Media,” Phys. Rev. Lett. 84(24), 5584–5587 (2000).
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1999 (3)

H. Cao, Y. G. Zhao, H. C. Ong, and R. P. H. Chang, “Far-field characteristics of random lasers,” Phys. Rev. B Condens. Matter Mater. Phys. 59(23), 15107–15111 (1999).
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S. V. Frolov, Z. V. Vardeny, K. Yoshino, A. Zakhidov, and R. H. Baughman, “Stimulated emission in high-gain organic media,” Phys. Rev. B Condens. Matter Mater. Phys. 59(8), R5284–R5287 (1999).
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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).
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1998 (2)

H. Cao, Y. G. Zhao, H. C. Ong, S. T. Ho, J. Y. Dai, J. Y. Wu, and R. P. H. Chang, “Ultraviolet lasing in resonators formed by scattering in semiconductor polycrystalline films,” Appl. Phys. Lett. 73(25), 3656–3658 (1998).
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H. Cao, Y. G. Zhao, H. C. Ong, S. T. Ho, J. Y. Dai, J. Y. Wu, and R. P. H. Chang, “Ultraviolet lasing in resonators formed by scattering in semiconductor polycrystalline films,” Appl. Phys. Lett. 73(25), 3656–3658 (1998).
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1994 (2)

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1993 (1)

1987 (1)

1986 (1)

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1968 (1)

V. S. Letokhov, “Generation of light by a scattering medium with negative resonance absorption,” Sov. Phys. JETP 26(4), 835 (1968).

1967 (1)

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1960 (1)

A. F. Ioffe and A. R. Regel, “Non-crystalline, amorphous and liquid electronic semiconductors,” Prog. Semicond. 4, 237–291 (1960).

1958 (1)

P. Anderson, “Absence of diffusion in certain random lattices,” Phys. Rev. 109(5), 1492–1505 (1958).
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Abaie, B.

B. Abaie, E. Mobini, S. Karbasi, T. Hawkins, J. Ballato, and A. Mafi, “Random lasing in an Anderson localizing optical fiber,” Light Sci. Appl. 6(8), e17041 (2017).
[Crossref] [PubMed]

Alayo, M. I.

Alberucci, A.

N. Karimi, M. Virkki, A. Alberucci, O. Buchnev, M. Kauranen, A. Priimagi, and G. Assanto, “Molding optical waveguides with nematicons,” Adv. Opt. Mat. Commun. 5(14), 1700199 (2017).
[Crossref]

A. Piccardi, N. Kravets, A. Alberucci, O. Buchnev, and G. Assanto, “Voltage driven beam bistability in a reorientational uniaxial dielectric,” APL Photonics 1(1), 011302 (2016).
[Crossref]

A. Alberucci, A. Piccardi, N. Kravets, O. Buchnev, and G. Assanto, “Soliton enhancement of spontaneous symmetry breaking,” Optica 2(9), 783–789 (2015).
[Crossref]

U. A. Laudyn, M. Kwasny, A. Piccardi, M. A. Karpierz, R. Dabrowski, O. Chojnowska, A. Alberucci, and G. Assanto, “Nonlinear competition in nematicon propagation,” Opt. Lett. 40(22), 5235–5238 (2015).
[Crossref] [PubMed]

N. Kravets, A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, and G. Assanto, “Bistability with Optical Beams Propagating in a reorientational medium,” Phys. Rev. Lett. 113(2), 023901 (2014).
[Crossref] [PubMed]

A. Piccardi, A. Alberucci, N. Kravets, O. Buchnev, and G. Assanto, “Power-controlled transition from standard to negative refraction in reorientational soft matter,” Nat. Commun. 5(1), 5533–5541 (2014).
[Crossref] [PubMed]

A. Piccardi, A. Alberucci, and G. Assanto, “Self-turning self-confined light beams in guest-host media,” Phys. Rev. Lett. 104(21), 213904 (2010).
[Crossref] [PubMed]

A. Piccardi, A. Alberucci, U. Bortolozzo, S. Residori, and G. Assanto, “Readdressable interconnects with spatial soliton waveguides in liquid crystal light valves,” Photon. Techn. Lett. 22(10), 694–696 (2010).
[Crossref]

A. Piccardi, A. Alberucci, and G. Assanto, “Power-dependent nematicon steering via walk-off,” J. Opt. Soc. Am. B 27(11), 2398–2404 (2010).
[Crossref]

A. Alberucci, M. Peccianti, and G. Assanto, “Nonlinear bouncing of nonlocal spatial solitons at the boundaries,” Opt. Lett. 32(19), 2795–2797 (2007).
[Crossref] [PubMed]

A. Alberucci, M. Peccianti, G. Assanto, G. Coschignano, A. De Luca, and C. Umeton, “Self-healing generation of spatial solitons in liquid crystals,” Opt. Lett. 30(11), 1381–1383 (2005).
[Crossref] [PubMed]

A. Pasquazi, A. Alberucci, M. Peccianti, and G. Assanto, “Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals,” Appl. Phys. Lett. 87(26), 261104 (2005).
[Crossref]

Alfano, R. R.

Alvarado, M. A.

Anderson, P.

P. Anderson, “Absence of diffusion in certain random lattices,” Phys. Rev. 109(5), 1492–1505 (1958).
[Crossref]

Andrews, A. M.

Ania-Castañón, J. D.

S. K. Turitsyn, S. A. Babin, A. E. El-Taher, P. Harper, D. V. Churkin, S. I. Kablukov, J. D. Ania-Castañón, V. Karalekas, and E. V. Podivilov, “Random distributed feedback fibre laser,” Nat. Photonics 4(4), 231–235 (2010).
[Crossref]

Apalkov, V. M.

V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Almost localized photon modes in continuous and discrete models of disordered media,” J. Opt. Soc. Am. B 21(1), 132–140 (2004).
[Crossref]

V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Random Resonators and Prelocalized Modes in Disordered Dielectric Films,” Phys. Rev. Lett. 89(1), 016802 (2002).
[Crossref] [PubMed]

V. M. Apalkov, M. E. Raikh, and B. Shapiro, “Random Resonators and Prelocalized Modes in Disordered Dielectric Films,” Phys. Rev. Lett. 89(1), 016802 (2002).
[Crossref] [PubMed]

Asatryan, A. A.

X. Wu, W. Fang, A. Yamilov, A. A. Chabanov, A. A. Asatryan, L. C. Botten, and H. Cao, “Random lasing in weakly scattering systems,” Phys. Rev. A 74(5), 053812 (2006).
[Crossref]

Assanto, G.

S. Perumbilavil, A. Piccardi, R. Barboza, O. Buchnev, M. Kauranen, G. Strangi, and G. Assanto, “Beaming random lasers with soliton control,” Nat. Commun. 9(1), 3863 (2018).
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S. Perumbilavil, M. Kauranen, and G. Assanto, “Near-infrared switching of light-guided random laser,” IEEE Photonics J. 10(5), 6100907 (2018).
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S. Perumbilavil, M. Kauranen, and G. Assanto, “Magnetic steering of directional random laser in soft matter,” Appl. Phys. Lett. 113, 121107 (2018).
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U. A. Laudyn, A. Piccardi, M. Kwasny, M. A. Karpierz, and G. Assanto, “Thermo-optic soliton routing in nematic liquid crystals,” Opt. Lett. 43(10), 2296–2299 (2018).
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S. Perumbilavil, A. Piccardi, O. Buchnev, M. Kauranen, G. Strangi, and G. Assanto, “All-optical guided-wave random laser in nematic liquid crystals,” Opt. Express 25(5), 4672–4679 (2017).
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Y. Izdebskaya, V. Shvedov, G. Assanto, and W. Krolikowski, “Magnetic routing of light-induced waveguides,” Nat. Commun. 8, 14452 (2017).
[Crossref] [PubMed]

N. Karimi, M. Virkki, A. Alberucci, O. Buchnev, M. Kauranen, A. Priimagi, and G. Assanto, “Molding optical waveguides with nematicons,” Adv. Opt. Mat. Commun. 5(14), 1700199 (2017).
[Crossref]

U. A. Laudyn, M. Kwaśny, F. A. Sala, M. A. Karpierz, N. F. Smyth, and G. Assanto, “Curved optical solitons subject to transverse acceleration in reorientational soft matter,” Sci. Rep. 7(1), 12385 (2017).
[Crossref] [PubMed]

A. Piccardi, N. Kravets, A. Alberucci, O. Buchnev, and G. Assanto, “Voltage driven beam bistability in a reorientational uniaxial dielectric,” APL Photonics 1(1), 011302 (2016).
[Crossref]

U. A. Laudyn, M. Kwasny, A. Piccardi, M. A. Karpierz, R. Dabrowski, O. Chojnowska, A. Alberucci, and G. Assanto, “Nonlinear competition in nematicon propagation,” Opt. Lett. 40(22), 5235–5238 (2015).
[Crossref] [PubMed]

A. Alberucci, A. Piccardi, N. Kravets, O. Buchnev, and G. Assanto, “Soliton enhancement of spontaneous symmetry breaking,” Optica 2(9), 783–789 (2015).
[Crossref]

A. Piccardi, A. Alberucci, N. Kravets, O. Buchnev, and G. Assanto, “Power-controlled transition from standard to negative refraction in reorientational soft matter,” Nat. Commun. 5(1), 5533–5541 (2014).
[Crossref] [PubMed]

N. Kravets, A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, and G. Assanto, “Bistability with Optical Beams Propagating in a reorientational medium,” Phys. Rev. Lett. 113(2), 023901 (2014).
[Crossref] [PubMed]

Y. Izdebskaya, A. Desyatnikov, G. Assanto, and Y. Kivshar, “Deflection of nematicons through interaction with dielectric particles,” J. Opt. Soc. Am. B 30(6), 1432–1437 (2013).
[Crossref]

M. Peccianti and G. Assanto, “Nematicons,” Phys. Rep. 516(4-5), 147–208 (2012).
[Crossref]

A. Piccardi, A. Alberucci, and G. Assanto, “Self-turning self-confined light beams in guest-host media,” Phys. Rev. Lett. 104(21), 213904 (2010).
[Crossref] [PubMed]

A. Piccardi, A. Alberucci, U. Bortolozzo, S. Residori, and G. Assanto, “Readdressable interconnects with spatial soliton waveguides in liquid crystal light valves,” Photon. Techn. Lett. 22(10), 694–696 (2010).
[Crossref]

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ACS Nano (1)

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Adv. Opt. Mat. Commun. (1)

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Appl. Opt. (2)

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S. Perumbilavil, M. Kauranen, and G. Assanto, “Magnetic steering of directional random laser in soft matter,” Appl. Phys. Lett. 113, 121107 (2018).
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M. Peccianti, C. Conti, G. Assanto, A. De Luca, and C. Umeton, “All Optical Switching and Logic Gating with Spatial Solitons in Liquid Crystals,” Appl. Phys. Lett. 81(18), 3335–3337 (2002).
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A. Piccardi, M. Peccianti, G. Assanto, A. Dyadyusha, and M. Kaczmarek, “Voltage-driven in-plane steering of nematicons,” Appl. Phys. Lett. 94(9), 091106 (2009).
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R. C. Polson and Z. V. Vardeny, “Random lasing in human tissues,” Appl. Phys. Lett. 85(7), 1289–1291 (2004).
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G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, and R. Bartolino, “Random lasing in dye doped nematic liquid crystals: the role of confinement geometry,” SPIE 6587, 65870P (2007), doi:.
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G. Assanto, Nematicons: Spatial Optical Solitons in Nematic Liquid Crystals (Wiley, 2012).

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S. Perumbilavil, A. Piccardi, O. Buchnev, M. Kauranen, G. Strangi, and G. Assanto, “Soliton-assisted random lasing in optically-pumped liquid crystals,” Appl. Phys. Lett. 109(16), 161105 (2016); ibid. 110(1), 1019902 (2017).

N. M. Shtykov, S. P. Palto, B. A. Umanskii, D. O. Rybakov, and I. V. Simdyamkin, “Waveguide amplification of dye fluorescence in NLC layer”, presented at the Workshop on Liquid Crystal Photonics (WLCP), Jastrzebia Gora (Poland) Sept. 20, 2018.

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Figures (9)

Fig. 1
Fig. 1 (a) Top-view geometry of the planar NLC sample and experimental arrangement, with ordinary-wave green pump laser and extraordinary-wave NIR soliton injected with wave-vectors along z and propagating with the extraordinary-wave emitted light in the yz principal plane. (b) Side-view of the 2 mm-long 100 μm-thick sample, showing the emitted light confined within the nematicon. (c) Experimental set-up with pump (Green) and NIR sources and various optical elements: mirrors (M), dichroic mirror (DM), beam-splitter (BS), polarizers (Pol), half-wave plates (λ/2), filters (F), microscope objectives (OBJ), focusing lenses (L), cameras (C), spectrometer (SM). The angle δ identifies the birefringent walk-off with respect to the input wave-vectors and the dashed arrows represent out-of-plane scattering from the NLC.
Fig. 2
Fig. 2 Photographs (top-view) of (a) an ordinary-wave NIR beam diffracting in the observation plane yz; (b) an extraordinary-wave beam diffracting at low-power (0.7 mW) and propagating with walk-off; (c) a 5 mW extraordinary-wave beam self-confined into a nematicon and propagating with walk-off. The wavelength is 1.064 μm and the scale bars correspond to 500 μm.
Fig. 3
Fig. 3 (a) Three realizations of single-shot spectra (red, blue, black lines) of random laser emission when pumping at 0.55 μJ and without a collinear NIR nematicon. (b) Spectra averaged over N = 200 realizations when pumping at 0.55 μJ, with zoomed-in inset showing a regular wavelength spacing of 0.7 nm. (c) Input-output RL characteristics (average of peak intensities) for various powers of the collinear nematicon, as marked in the legend. The RL threshold shifts to lower energies as the input NIR power increases.
Fig. 4
Fig. 4 Realizations of single-shot RL output intensity spectra for nematicon input powers of 0, 2, 4, 6 mW from top to bottom and pump energies (a) 0.48 μJ, (b) 0.51 μJ, (c) 0.55 μJ, respectively.
Fig. 5
Fig. 5 (a) Peak intensity counts from averaged RL spectra (N = 200) versus pump energy/pulse without (black line and symbols) in the presence of a 6 mW nematicon (red line and symbols). (b) Same as in (a) but averaging peak intensity values from single-shot spectra (see also [94]). The transitions α and β (light blue lines and arrows) indicate possible transistor-like operations at different pump biases.
Fig. 6
Fig. 6 (a) Photograph of emitted light in the observation plane yz in the absence of a NIR nematicon and for pump pulses of energy 0.55 μJ; (b) as in (a) but with a pump-collinear nematicon of 6 mW confining the emitted light. The scale bars correspond to 500 μm. (c-d) Photographs of the emitted RL light (corresponding to (a) and (b), respectively) in the transverse plane xy at the cell output (c) without NIR soliton or (d) in the presence of the soliton; the white dashed circle indicates the output location of an ordinary-wave propagating without walk-off along the input wave-vector. The scale bars correspond to 100 μm. (e-f) Photographs of the backward emitted RL light (above threshold) in the transverse plane xy at the cell entrance and in the presence of a 6 mW NIR soliton; the two realizations correspond to distinct pump pulses of energy 0.8 μJ and the scale bar to 25 μm.
Fig. 7
Fig. 7 (Top) Photographs and (bottom) corresponding output spectra of RL emission well above threshold (E = 0.95 μJ) upon voltage-controlled steering for (a) V = 0 V, (b) V = 0.5 V, (c) V = 1.0 V, (d) V = 1.5 V and (e) V = 2.0 V. The input NIR power for the nematicon was 5 mW.
Fig. 8
Fig. 8 (a-b) Photographs of output profiles (plane xy) of RL emission above threshold (E = 0.95 μJ) with a 5 mW nematicon and for an applied voltage of (a) V = 0 V and (b) V = 2.0 V. The white dashed circle indicates the output location corresponding to the input wave-vector; the scale bars measure a 100 μm length. (c) Calculated (solid blue line) and measured (symbols with error bars) walk-off versus applied voltage (see also [93]).
Fig. 9
Fig. 9 (a-b) Photographs of output profiles (plane xy) of RL emission above threshold (E = 0.6 μJ) for a 7 mW nematicon and magnetic field along (a) θm = + 50° and (b) θm = −50°. The scale bars measure 100 μm. (c) Calculated (solid red line) and measured (symbols) walk-off versus θm, with examples of RL output spectra averaged over N = 200 pump pulses (see also [97]).

Tables (1)

Tables Icon

Table 1 Measured RL energy output Eout and conversion efficiency η corrected for Fresnel losses and transmission of the optical elements for various pump energies/pulse E and NIR input beam powers PNIR. Extrapolated (Eout)max and ηmax for a 130 μm long sample, assuming NLC scattering and absorption losses amounting to 6.95 cm−1 [89].