Abstract

Using both second harmonic generation (SHG) and optical waveguiding techniques, we have investigated the second order nonlinear optical response of a recently synthesized main chain accordion polymer, 1,2-benzyl-1 ,2-cyclohexyl-bridged syndioregic α-cyano cinnamamide¹ (BCSC). The nonlinear optical active BCSC film was prepared by spin coating the polymer solution (in chloroform) on an indium tin oxide coated pyrex substrate (film thickness about 1.4 μm) The film was then poled slightly above T_g using the corona discharge during which time the intensity of second harmonic generation (SHG) was monitored. Shown in Fig. 1 is the SHG intensity of the BCSC film as it is heated from 190 to 250°C. The heating rate is 1.6°C/min.

© 1993 Optical Society of America