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- W2952643911 abstract "We consider the effect of photoinduced optical anisotropy (POA) in azopolymers. Using a unified approach to the kinetics of photo-reorientation we discuss the assumptions underlying the known theoretical models of POA and formulate a tractable phenomenological model in terms of angular redistribution probabilities and order parameter correlation functions. The model takes into account biaxiality effects and long term stability of POA in azopolymers. It predicts that under certain conditions two different mechanisms, photoorientation and photoselection, will dominate POA depending on the wavelength of pumping light. By using available experimental data, we employ the model to compute dependencies of principal absorption coefficients on the illumination time. Our calculations clearly indicate the different regimes of POA and the numerical results are found to be in good agreement with the experimental data." @default.
- W2952643911 created "2019-06-27" @default.
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- W2952643911 date "2002-08-06" @default.
- W2952643911 modified "2023-09-23" @default.
- W2952643911 title "Kinetics of photoinduced anisotropy in azopolymers: models and mechanisms" @default.
- W2952643911 doi "https://doi.org/10.48550/arxiv.cond-mat/0208123" @default.
- W2952643911 hasPublicationYear "2002" @default.
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