Abstract
Photorefractive materials based on unplasticized polymers that have a high glass transition temperature and the frozen random orientation of chromophores are prepared by layer casting. Under these conditions, only the third-order susceptibility has a nonzero value, by increasing with an increase in the conjugation chain length and reaching considerable values in the case of nano-sized molecules, such as single wall carbon nanotubes. In single wall carbon nanotubes containing poly-N-vinylcarbazole, the photoelectric sensitivity and photorefractive characteristics are measured at 1064 and 1550 nm.
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