Abstract
The photorefractive polymer systems have been investigated on the basis of the functionalized polysiloxane doped with a single small molecule species that has the dual function of providing both charge-transport and optical non-linearity. Detailed studies including photoconductivity, carrier mobility, etc., have been conducted. The non-local character of the photorefractivity has been demonstrated through the asymmetric energy transfer in a two-beam coupling experiment. Net two-beam coupling gains were observed for the systems. Finally, the field dependence of the gain coefficient is described.
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