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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 17 — Aug. 21, 2006
  • pp: 7737–7744

Random lasing and weak localization of light in dye-doped nematic liquid crystals

G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, and R. Bartolino  »View Author Affiliations

Optics Express, Vol. 14, Issue 17, pp. 7737-7744 (2006)

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The first observation of random laser action in a partially ordered, optically anisotropic nematic liquid crystal with long-range dielectric tensor fluctuations is reported. Above a given pump power the fluorescence curve collapses and the typical narrowing and explosion effect leads to discrete sharp peaks. The unexpected surviving of interference effects in recurrent multiple scattering provide the required optical feedback for lasing in nematics. Coherent backscattering of light waves in orientationally ordered nematic liquid crystals manifests a weak localization of light which strongly supports diffusive laser action in presence of gain medium. Intensity fluctuations of the speckle-like emission pattern indicate the typical spatio-temporal randomness of diffusive laser emission. A comparison of the laser action is reported for systems with different order degree: fully disordered semiconductor powders, self-ordered cholesterics and partially ordered nematic liquid crystals.

© 2006 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(290.1350) Scattering : Backscattering

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 23, 2006
Revised Manuscript: June 29, 2006
Manuscript Accepted: July 3, 2006
Published: August 21, 2006

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, 7737-7744 (2006)

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  1. J. D. Joannopoulos, R. D. Meade, and J. N. Winn, Photonic Crystals: "Moulding the Flow of Light" (Princeton University Press, Princeton, NJ, 1995).
  2. V. S. Letokhov, "Quantum statistics of multiple- mode emission of an atomic ensemble," Sov. Phys.-JETP 26,1246 (1968).
  3. A. Z. Genack and J. M. Drake, "Scattering for super-radiation," Nature 368, 400 (1994). [CrossRef]
  4. V. M. Markushev, V. F. Zolin and Ch. M. Briskina "Luminescence and stimulated emission of neodymium in sodium lanthanum molybdate powders," Sov. J. Quantum Electron. 16, 281 (1986). [CrossRef]
  5. C. Gouedard, D. Husson, C. Sauteret, F. Auzel and A. Migus, "Generation of spatially incoherent short pulses in laser-pumped neodymium stoichiometric crystals and powders," J. Opt. Soc. Am. B 10, 2358 (1993). [CrossRef]
  6. M. A. Noginov, N. E. Noginov, H. J. Caulfield, P. Venkateswarlu, T. Thompson, M. Mahdi, and V. Ostroumov, "Short-pulsed stimulated emission in the powders of NdAl3(BO3)4, NdSc3(BO3)4, and Nd:Sr5(PO4)3F laser crystals," J. Opt. Soc. Am. B 13, 2024 (1996). [CrossRef]
  7. D. S. Wiersma and A. Lagendijk, "Light diffusion with gain and random lasers," Phys. Rev. E 54, 4256 (1997). [CrossRef]
  8. 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, 2278 (1999). [CrossRef]
  9. D. Wiersma and S. Cavalieri, "A temperature tunable random laser," Nature 414, 708 (2001). [CrossRef] [PubMed]
  10. P.W. Anderson, "Absence of diffusion in certain random lattices," Phys. Rev. 109, 1492 (1958). [CrossRef]
  11. V. P. Romanov and A. N. Shalaginov, Opt. Sectrosc.(Trans. of Opt. Spektrosk.) 64, 774 (1988);
  12. B. A. van Tiggelen, R. Maynard, and A. Heiderich, "Anisotropic light diffusion in Oriented Nematic Liquid Crystals," Phys. Rev. Lett. 77, 639 (1996). [CrossRef] [PubMed]
  13. H. Stark and T. C. Lubensky, "Multiple Light Scattering in Nematic Liquid Crystals," Phys. Rev. Lett. 77, 2229 (1996). [CrossRef] [PubMed]
  14. M. H. Kao, K. A. Jeter, A. G. Yodh, P. J. Colling, "Observation of light diffusion and correlation transport in Nematic Liquid Crystals," Phys. Rev. Lett. 77, 2233 (1996). [CrossRef] [PubMed]
  15. H. Stark Holger Stark, Ming H. Kao, Kristen A. Jester, T. C. Lubensky, Arjun G. Yodh, and Peter J. Collings, "Light diffusion and diffusing-wave spectroscopy in nematic liquid crystals," J. Opt. Soc. Am. A 14, 156 (1997). [CrossRef]
  16. D. S. Wiersma, A. Muzzi, M. Colocci, R. Righini, "Time-resolved anisotropic multiple light scattering in Nematic Liquid Crystals," Phys. Rev. Lett. 83, 4321 (1999). [CrossRef]
  17. P. M. Johnson, B. J. Bret, J. G. Rivas, J. J. Kelly, and Ad . Langendijk, "Anisotropic diffusion of light in a strongly scattering material," Phys. Rev. Lett. 89, 243901 (2002). [CrossRef] [PubMed]
  18. H. K. Vithana, L. Asfaw, and D. L. Johnson, "Coherent backscattering of light in a nematic liquid crystal," Phys. Rev. Lett. 70, 3561 (1993). [CrossRef] [PubMed]
  19. R. Sapienza, S. Mujumdar, C. Cheung, A. G. Yodh, D. Wiersma, "Anisotropic weak localization of light," Phys. Rev. Lett. 92, 033903 (2005). [CrossRef]
  20. P. G. deGennes, "The Physics of the Liquid Crystals" (Oxford University Press, New York, 1974).
  21. S. T. Wu and D.K. Yang, "Reflective Liquid Crystal Displays" (John Wiley & Sons, Chichester, 2001).
  22. V. I. Kopp, B. Fan, H. K.M. Vithana, and A. Z. Genack, "Low-threshold lasing at the edge of a photonic stop band in cholesteric liquid crystals," Opt. Lett. 23, 1707 (1998). [CrossRef]
  23. W. Cao, A. Munoz, P. Palffy-Muhoray, and B. Taheri, "Lasing in a three-dimensional photonic crystal of the liquid crystal blue phase II," Nature Materials 1, 111 (2002). [CrossRef]
  24. J. Schmidtke, W. Stille, H. Finkelmann, and S.T. Kim, "Laser Emission in a Dye Doped Cholesteric Polymer Network," Adv. Mater. 14, 746 (2002). [CrossRef]
  25. M. Ozaki, M. Kasano, D. Ganzke, W. Haase, and K. Yoshino, "Mirrorless Lasing in a Dye-Doped Ferroelectric Liquid Crystal," Adv. Mater. 14, 306 (2002). [CrossRef]
  26. G. Strangi, V. Barna, R. Caputo, A. De Luca, G. N. Price, C. Versace, N. Scaramuzza, C. Umeton, and R. Bartolino, "Color-Tunable Organic Microcavity Laser Array Using Distributed Feedback," Phys. Rev. Lett. 94, 063903 (2005). (Editor’s choice for the 2005 Virtual J.Nanoscale Sci. Technol.,  11 (8), 2005). [CrossRef] [PubMed]
  27. H. Cao, J. Y. Xu, E. W. Seelig, and R. P. H. Chang, "Microlaser made of disordered media," Appl. Phys. Lett.,  76, 2997 (2000). [CrossRef]
  28. G. V. Soest and Ad Lagendijk; "beta factor in a random laser," Phys. Rev. E,  65, 047601 (2002). [CrossRef]

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