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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 2 — Feb. 1, 2001
  • pp: 182–186

Transient photoinduced current in dye-doped polymer and polymer-dispersed liquid crystals

G. Cipparrone, A. Mazzulla, P. Pagliusi, A. V. Sukhov, and R. F. Ushakov  »View Author Affiliations

JOSA B, Vol. 18, Issue 2, pp. 182-186 (2001)

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Results are reported on the experimental observation and detailed treatment of photoinduced dc currents, which arise in both dye-doped polymer and dispersion of liquid-crystalline droplets in the same polymer under cw laser-beam illumination. These currents reveal transient behavior, i.e., a relaxation to zero value after an initial increase. This growth is monotonic by low values of the laser radiation intensity, but it changes to oscillating behavior by higher values. A preliminary theoretical approach, which is based on experimentally observed features, reveals good qualitative agreement with current temporal-envelope measurements. The observation of these photoinduced currents is another evidence for the photorefractive nature of the light-induced diffraction gratings, which were observed earlier in the same materials.

© 2001 Optical Society of America

OCIS Codes
(160.2900) Materials : Optical storage materials
(160.3710) Materials : Liquid crystals
(160.5140) Materials : Photoconductive materials
(160.5320) Materials : Photorefractive materials
(160.5470) Materials : Polymers
(260.5150) Physical optics : Photoconductivity

G. Cipparrone, A. Mazzulla, P. Pagliusi, A. V. Sukhov, and R. F. Ushakov, "Transient photoinduced current in dye-doped polymer and polymer-dispersed liquid crystals," J. Opt. Soc. Am. B 18, 182-186 (2001)

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  1. P. Gunter and J.-P. Huignard, Photorefractive Materials and Their Applications (Springer-Verlag, Berlin, 1989), Vols. I and II.
  2. P. Yeh, Introduction to Photorefractive Nonlinear Optics (Wiley, New York, 1993).
  3. W. E. Moerner and S. M. Silence, “Polymeric photorefractive materials,” Chem. Rev. 94, 127–155 (1994); J. C. Scott, L. Th. Pautmeier, and W. E. Moerner, “Photoconductivity studies of photorefractive polymers,” J. Opt. Soc. Am. B 9, 2059–2064 (1992), and reference therein. [CrossRef]
  4. G. Cipparrone, A. Mazzulla, and F. Simoni, “Orientational gratings in dye doped polymer dispersed liquid crystals induced by photorefractive effect,” Opt. Lett. 23, 1505–1507 (1998); F. Simoni, G. Cipparrone, A. Mazzulla, and P. Pagliusi, “Polymer dispersed liquid crystals: effects of photorefractivity and local heating on holographic recording,” Chem. Phys. 245, 429–436 (1999), and reference therein. [CrossRef]
  5. G. Cipparrone, A. Mazzulla, and F. Simoni, “Writing and erasure of holographic gratings in dye doped PDLC,” Mol. Cryst. Liq. Cryst. 299, 329–336 (1997). [CrossRef]
  6. G. Cipparrone, A. Mazzulla, F. P. Nicoletta, L. Lucchetti, and F. Simoni, “Holographic grating formation in dye doped polymer dispersed liquid crystals,” Opt. Commun. 150, 297–304 (1998). [CrossRef]
  7. J.-P. Huignard and A. Marrakchi, “Coherent signal beam amplification in two wave mixing experiments with photorefractive Bi12SiO20 crystals,” Opt. Commun. 38, 249–254 (1981). [CrossRef]
  8. P. S. Drzaic, Liquid Crystal Dispersions (World Scientific, Singapore, 1995).
  9. P. G. DeGennes and J. Prost, The Physics of Liquid Crystals 2nd ed. (Oxford University, London, 1993).

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