Abstract
A photo-cross-linked side-chain second-order nonlinear optical polymer was synthesized with bis-phenol-A as the polymer backbone. The characterization of the polymer was done by nuclear magnetic resonance, infrared spectra, ultraviolet spectra and dynamic mechanical analysis methods. The electro-optic film was obtained by spin-coating and corona poling then photo-cross-linked. The film showed high glass transition temperature (160°C) and improved chromophore orientation stability. An electro-optic measuring system was established based on this film. The results showed that the film has a linear electro-optic characteristic and the voltage sensitivity was higher than that of a GaAs probe.
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