HIGH E-O COEFFICIENT POLYMERS BASED ON A CHROMOPHORE CONTAINING ISOPHORONE MOIETY FOR SECOND-ORDER NONLINEAR OPTICS

摘要

A high-μβ chromophore APII utilizing isophorone as it-conjugation bridge was processed into both PMMA guest host and crosslinked (XL) polyurethane network with various loading densities. High electro-optic coefficients, r_(33) = 30 pm/V (in PMMA) and r_(33) = 32 pm/V (in polyurethane) at 1.06 μm were obtained. Alignment temporal stability ranged from 90 to 120℃ for XL polymer network. There is virtually no intrinsic absorption loss at 1.3 μm (solution measurement). Also noteworthy is that high optimum loading densities of this chromophore are attainable in both cases without detectable chromophore aggregation due to intermolecular electrostatic interactions.