Abstract
We have developed novel multifunctional materials for photorefractive applications. Two kinds of molecular systems were studied: acceptor-substituted carbazole main-chain polymers and oligomers. The photocarrier generation properties and second-order nonlinear optical responses in acceptor-substituted carbazoles were examined by xerographic discharge, second-harmonic generation and electro-optic measurements. The multifunctionalities of the main-chain polymers and oligomers with carbazole moieties were confirmed, which fulfill all the requirements for photorefraction. Photorefractive effects were confirmed by two-beam coupling and four-wave mixing measurements. These multifunctional carbazole main-chain polymers and oligomers enable us the development of monolithic photorefractive materials.
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