M. Kamath et al., 2ND-ORDER NONLINEAR-OPTICAL PROPERTIES OF A POLYMER EXHIBITING OPTICAL TRANSPARENCY DOWN TO 340-NM, Journal of macromolecular science. Pure and applied chemistry, A31(12), 1994, pp. 2011-2018
The synthesis and characterization of an epoxy-based nonlinear optical
(NLO) polymer exhibiting optical transparency down to 340 nm is repor
ted. The synthesized polymers show spectroscopic properties (NMR, IR,
UV) in accordance with the proposed structures. A glass transition tem
perature (T(g)) of 92-degrees-C and a thermal degradation temperature
(T(d)) of 322-degrees-C were recorded. The poled polymer film exhibits
stable second-order nonlinear optical activity (d33 = 4.2 pm/V) over
a period of 800 hours as characterized by the temporal response of the
second harmonic signal at room temperature.