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Nonlinear optical side-chain polymer with high thermal stability and its pyroelectric thermal analysis



Applied Physics Letters 63 (1993), No.15, pp.2018-20
ISSN: 0003-6951
ISSN: 1077-3118
Journal Article
Fraunhofer HHI ()
electro-optical effects; nonlinear optics; optical polymers; pyroelectricity; thermal analysis; synthesis; side-chain polymer; thermal stability; pyroelectric thermal analysis; nonlinear optical side groups; maleic anhydride copolymers; azo dye; disperse red 1; esterification; electrode poling; electro-optic thermal analysis; guest/host polymer; dipole orientation; 185 degc; 150 degc; 780 nm

Stable polymers with nonlinear optical side groups were synthesized from maleic anhydride copolymers and the azo dye Disperse Red 1 via esterification. After electrode poling under 135 V/ mu m at 185 degrees C, thermal stabilities were measured by pyroelectric and electro-optic thermal analysis and compared to a guest/host polymer of polymethylmethacrylate and the same dye. The pyroelectrically detected dipole orientation and the electro-optic activity of the side-chain polymers decreased only above 150 degrees C, and electro-optic r33 coefficients of up to 6 pm/V were achieved at 780 nm even without optimizing the dye content.