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Optics Letters

Optics Letters

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  • Vol. 24, Iss. 19 — Oct. 1, 1999
  • pp: 1349–1351

Photoinduced orientation of azo dye in various polymer matrices

P.-A. Blanche, Ph. C. Lemaire, M. Dumont, and M. Fischer  »View Author Affiliations


Optics Letters, Vol. 24, Issue 19, pp. 1349-1351 (1999)
http://dx.doi.org/10.1364/OL.24.001349


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Abstract

Photoinduced dichroism in various polymers containing the same azo dye has been studied. “Angular hole burning” and molecular reorientation have been identified by analysis of dichroism dynamics at various probe wavelengths. The glass-transition temperature Tg is of major relevance for the reorientation of optically active molecules. For low Tg (below ambient temperature) thermal diffusion impedes anisotropy buildup. For higher Tg the angular distribution induced by the polarized pump beam is frozen. We propose a simple model based on diffusion rates in trans and cis molecules.

© 1999 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(160.4890) Materials : Organic materials

Citation
P.-A. Blanche, Ph. C. Lemaire, M. Dumont, and M. Fischer, "Photoinduced orientation of azo dye in various polymer matrices," Opt. Lett. 24, 1349-1351 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-19-1349

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