Phenoxy-Silicon Polymer with Stable Second Order Optical Nonlinearity.(Reannouncement with New Availability Information)

摘要

A new crosslinked second order nonlinear optical material based on analkoxysilane dye and a multifunctional phenoxyl molecule has been investigate. The design approach to this polymer system is also discussed. The nonlinear optical chromophores can be directly bound to an aryl-bridged network during the curing process. After crosslinking at 200 deg (5 places) C for 30 minutes, the crosslinked polymeric material was found to be amorphous with a Tg of 110 deg (5 places) C and a degradation temperature of 278 deg (5 places) C. The poled and crosslinked sample exhibits a second order nonlinear optical coefficient, d (sub 33), of 77 pm/V. After being subjected to thermal treatment at 105 deg (5 places) for 24 hours, a reduction of only 19% of d (3 places) was observed for the poled and cured sample. The d (sub 33) value remained uncharged at 105 deg (5 places) for another 144 hours, to which measurements were carried out. Detailed characteristics of crosslinked material are discussed.