High-temperature nonlinear optical chromophores and polymers
Miller, RD × Burland, DM Jurich, M Lee, VY Lundquist, PM Moylan, CR Twieg, RJ Thackara, JI Verbiest, Thierry Sekkat, Z Wood, J Aust, EF Knoll, W #
American Chemical Society
ACS Symposium Series vol:672 pages:100-122
Poled polymers for fully integrated modulator and switching applications will require orientational stability under device operating conditions and thermal stability of the chromophores and polymers during poling and integration. The latter may require heating to 250 degrees C or more for brief periods. We describe hen the preparation of a number of NLO polyimide derivatives which meet these thermal requirements. Derivatives containing the NLO chromophore donor substituents embedded in the polymer main chain show exceptional thermal and orientational stability. We also describe preliminary results on the efficient photoassisted electric field poling of high Tg azo-containing polymers at room temperature. This process may alleviate some of the difficulties inherent to poling at very high temperatures.