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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 3 — Mar. 1, 2003
  • pp: 538–544

Photoinduced critical opalescence and reversible all-optical switching in photosensitive liquid crystals

Nelson V. Tabiryan, Svetlana V. Serak, and Vladimir A. Grozhik  »View Author Affiliations

JOSA B, Vol. 20, Issue 3, pp. 538-544 (2003)

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We present the results of a study of the critical opalescence that is observed as a result of reversible trans–cis photoisomerization in the vicinity of photoinduced isothermal phase transitions in azobenzene liquid crystals (azo LCs). The opalescence is caused by the generation of randomly oriented microdomains and microdroplets of isotropic phase in the illuminated area of the azo LC. Transformations between the strongly light-scattering nematic phase and the transparent isotropic phase of the azo LC are induced all-optically by combination of green (λ=532 nm) and violet (λ=409 nm) laser beams.

© 2003 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.0190) Nonlinear optics : Nonlinear optics
(210.4770) Optical data storage : Optical recording
(260.5130) Physical optics : Photochemistry
(290.0290) Scattering : Scattering

Nelson V. Tabiryan, Svetlana V. Serak, and Vladimir A. Grozhik, "Photoinduced critical opalescence and reversible all-optical switching in photosensitive liquid crystals," J. Opt. Soc. Am. B 20, 538-544 (2003)

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  1. I. C. Khoo, M.-Y. Shih, and A. Shishido, “Supra-nonlinear photosensitive liquid crystals for image processing, switchable holographic lens, and optical limiting,” in Liquid Crystals IV, I. C. Khoo, ed., Proc. SPIE 4107, 151–159 (2000). [CrossRef]
  2. N. V. Tabiryan, U. A. Hrozhyk, H. L. Margaryan, M. J. Mora, S. R. Nersisyan, and S. V. Serak, “Nonlinear optical absorption and related phenomena in liquid crystals,” in Advances in Liquid Crystalline Materials and Techniques, P. T. Mather, D. J. Broer, T. J. Bunner, D. M. Walba, and R. Zendel, eds., MRS Proc. 709, CC4.5.1–CC4.5.11 (2002).
  3. T. Ikeda, O. Tsutsumi, and Y. Wu, “Optical switching and image storage by means of photochromic liquid crystals,” Mol. Cryst. Liq. Cryst. 347, 1–13 (2000). [CrossRef]
  4. S. Kurihara, S. Nomiyama, and T. Nonaka, “Photochemical switching between a compensated nematic phase and a twisted nematic phase by photoisomerization of chiral azobenzene molecules,” Chem. Mater. 12, 9–12 (2000). [CrossRef]
  5. S. V. Serak, E. O. Arikainen, H. F. Gleeson, V. A. Grozhik, J.-P. Guillou, and N. A. Usova, “Laser-induced concentric colour domains in a cholesteric liquid crystal mixture containing a nematic azobenzene dopant,” Liq. Cryst. 29, 19–26 (2002). [CrossRef]
  6. S. Kurihara, T. Kanda, T. Nagase, and T. Nonaka, “Photochemical color switching behavior of induced cholesteric liquid crystals for polarized free liquid crystalline devices,” Appl. Phys. Lett. 73, 2081–2083 (1998). [CrossRef]
  7. H.-K. Lee, K. Doi, A. Kanazawa, T. Sciono, T. Ikeda, T. Fujisawa, M. Aizawa, and B. Lee, “Light-scattering-mode optical switching and image storage in polymer/liquid crystal composite films by means of photochemical phase transition,” Polymer 41, 1757–1763 (1999). [CrossRef]
  8. O. Tsutsumi, Y. Demachi, A. Kanazawa, T. Shiono, T. Ikeda, and Yu. Nagase, “Photochemical phase-transition behavior of polymer liquid crystals induced by photochemical reaction of azobenzenes with strong donor-acceptor pairs,” J. Phys. Chem. B 102, 2869–2874 (1998). [CrossRef]
  9. S. Kurihara, A. Sakamoto, D. Yoneyama, and T. Nonaka, “Photochemical switching behavior of liquid crystalline polymer networks containing azobenzene molecules,” Macromolecules 32, 6493–6498 (1999). [CrossRef]
  10. T. Sasaki, T. Ikeda, and K. Ichimura, “Photochemical control of properties of ferroelectric liquid crystals. Photochemical flip of polarization,” J. Am. Chem. Soc. 116, 625–628 (1994). [CrossRef]
  11. Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, “Photocontrolled nanophase segregation in a liquid-crystal solvent,” Nature 398, 54–57 (1999). [CrossRef]
  12. A. A. Kovalev, G. L. Nekrasov, Yu. V. Razvin, V. A. Grozhik, and S. V. Serak, “Optical recording of the information in azobenzene liquid crystals,” in Handbook of Optical Methods of Information Processing, V. A. Pilipovich, ed. (Science and Technique, Minsk, Belarus, 1978), pp. 21–35.
  13. T. Ikeda and O. Tsutsumi, “Optical switching and image storage by means of azobenzene liquid-crystal films,” Science 268, 1873–1875 (1995). [CrossRef] [PubMed]
  14. V. Grozhik, H. Gleeson, S. Serak, S. Watson, and A. Agashkov, “Study of optical switching and reorientation in liquid crystals of homologous series of 4-n-butyl-4-n-alkoxyazobenzenes,” Mol. Cryst. Liq. Cryst. 320, 433–444 (1998). [CrossRef]
  15. S. J. Watson, H. F. Gleeson, A. D’Emanuele, S. Serak, and V. Grozhik, “A study of in situ isothermal phase transition in photochromic liquid crystals,” in Photosensitive Optical Materials and Devices II, M. P. Andrews, ed., Proc. SPIE 3282, 76–85 (2000). [CrossRef]
  16. A. Kovalev, T. King, S. Serak, N. Usova, and A. Agashkov, “Four-wave phase conjugation in liquid crystals with photoisomerizable dopants,” Opt. Commun. 183, 503–514 (2000). [CrossRef]
  17. C. Egami, Y. Suzuki, O. Sugihara, N. Okamoto, H. Fujimura, K. Nakagawa, and H. Fujiwara, “Third-order resonant optical nonlinearity from trans–cis photoisomerization of an azo dye in a rigid matrix,” Appl. Phys. B 64, 471–478 (1997). [CrossRef]
  18. A. Makushenko, O. Stolbova, and B. Neporent, “Reversible orientational photodichroism and photoisomerization of aromatic azo-compounds,” Opt. Spectrosc. (USSR) 31, 295–302 (1971).
  19. M. Dumont, “Photoinduced orientational order in dye-doped amorphous polymeric films,” Mol. Cryst. Liq. Cryst. 282, 437–450 (1996). [CrossRef]
  20. I. Janossy and L. Slabados, “Optical reorientation of nematic liquid crystals in the presence of photoisomerization,” Phys. Rev. E 58, 4598–4604 (1998). [CrossRef]
  21. S. Serak, A. Kovalev, A. Agashkov, H. Gleeson, S. Watson, V. Reshetnyak, and O. Yaroshchuk, “Laser-induced surface and bulk reorientation of the director in azo-dye-doped liquid crystal cells,” Opt. Commun. 187, 235–247 (2001). [CrossRef]
  22. H. E. Stanley, Introduction to Phase Transitions and Critical Phenomena (Oxford U. Press, Oxford, 1987).
  23. M. A. Anisimov, Critical Phenomena in Liquids and Liquid Crystals (Gordon & Breach, London, 1991).

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