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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 9 — May. 1, 1998
  • pp: 727–729

Diffusion of photoexcited azo dye in a liquid-crystal host

B. Saad, M. M. Denariez-Roberge, and T. V. Galstyan  »View Author Affiliations


Optics Letters, Vol. 23, Issue 9, pp. 727-729 (1998)
http://dx.doi.org/10.1364/OL.23.000727


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Abstract

Dynamic holograms are created and studied in a D2 azo-dye-doped nematic liquid crystal. The dependence of diffraction on the excitation and probe polarizations is observed. The efficiency of excitation and the corresponding relaxation time depend also on the period and orientation of the light-interference pattern with respect to the initial molecular orientation. The excitation and diffusion of dye molecules are suggested to be the origin of these phenomena.

© 1998 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(260.1960) Physical optics : Diffraction theory
(260.5130) Physical optics : Photochemistry
(260.5430) Physical optics : Polarization
(290.1990) Scattering : Diffusion

Citation
B. Saad, M. M. Denariez-Roberge, and T. V. Galstyan, "Diffusion of photoexcited azo dye in a liquid-crystal host," Opt. Lett. 23, 727-729 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-9-727

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