A bifunctional chromophore has been developed which serves as a charge transporting agent as well as a second‐order nonlinear optical compound. The chromophore has been incorporated into an inert polymer to form a photorefractive material when doped with a photocharge generation sensitizer. The dependence of the four‐wave mixing diffraction efficiency, holographic grating writing rate, and two‐beam coupling gain on the chromophore concentration has been studied. The results confirm the photorefractive character of the composite.

Topics
Diffraction, Four wave mixing, Gratings, Photorefractive materials, Charge transport, Chemical compounds
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© 1995 American Institute of Physics.
1995
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