Options
1994
Conference Paper
Title
Electro-optical and pyroelectrical thermal analysis of novel nonlinear optical side-chain polymers with high thermal stability
Abstract
Polymers containing nonlinear optical moieties were prepared on the basis of maleic anhydride copolymers. Azo dyes such as Disperse Red 1 (DR 1) were attached to the polymer backbones via esterification, amidization, or imidization. Optimal poling conditions for the side-chain polymers were determined. After electrode poling with a bias voltage of 200 V at a temperature of 185 degrees C, the spin-coated samples were slowly cooled down to room temperature with the poling field still applied. The thermal stabilities of the poled polymer films were measured by means of electro-optical (EOTA) and pyroelectrical (PTA) thermal analysis and compared to the respective responses of DR 1/polymethylmethacrylate (PMMA) guest/host polymer samples. Both experimental techniques (EOTA and PTA) are discussed together with the experimental results. An electro-optical r33 coefficient of approximately 6 pm/V was achieved at a wavelength of 780 nm for one of the side-chain polymers, and the electro-optical activity decreased only at temperatures above 150 degrees C.
Language
English
Keyword(s)
electro-optical effects
nonlinear optical susceptibility
optical harmonic generation
optical polymers
polymer blends
polymer films
pyroelectricity
thermal analysis
nonlinear optical polymers
optimal poling
shg
azo dyes
electro-optical thermal analysis
pyroelectrical thermal analysis
high thermal stability
maleic anhydride copolymers
esterification
amidization
imidization
side-chain polymers
spin-coated
electro-optical activity