Theoretical model of photoinduced anisotropy in liquid-crystalline azobenzene side-chain polyesters
JOSA B, Vol. 15, Issue 3, pp. 1120-1129 (1998)
http://dx.doi.org/10.1364/JOSAB.15.001120
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Abstract
A theoretical framework for the temporal behavior of photoinduced anisotropy in liquid-crystalline azobenzene side-chain polyesters is constructed. The domain structure of the material is taken into account and intermolecular interactions are included through a mean-field description. Photoinduced trans↔cis isomerization is taken as the dominating source of chromophore reorientation events, and it is demonstrated how this mechanism in conjunction with the multidomain picture is able to account for the long-term stability of the anisotropy. The photoinduced birefringence is calculated by means of a truncated basis method, and in addition the photostationary solution is obtained. Comparison between theory and experiment shows excellent agreement in the entire range of intensities used experimentally.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(210.4810) Optical data storage : Optical storage-recording materials
Citation
Thomas Garm Pedersen, Per Michael Johansen, Niels Christian Rømer Holme, P. S. Ramanujam, and Søren Hvilsted, "Theoretical model of photoinduced anisotropy in liquid-crystalline azobenzene side-chain polyesters," J. Opt. Soc. Am. B 15, 1120-1129 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-3-1120
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