PHASE-MATCHED 2ND-HARMONIC GENERATION IN POLED POLYMER WAVE-GUIDE BASED ON A MAIN-CHAIN POLYMER

The electric field-induced dynamic phase-matching of second harmonic g eneration (SHG) waveguide was demonstrated by using a main chain polya rylamine. The linear and nonlinear optical properties of this polymer are presented. The optimum phase-matching thickness was controlled by applying an electric field to the polymer waveguide. The effective pha se matching thickness variation induced by poling is about 0.025 mu m that is six times larger than full width at the half-maximum (FWHM) of phase-matching thickness in conventional slab waveguide. The efficien t phase-matched SHG was observed from a taperless slab waveguide. The optical loss of poled polymer on glass substrate at 632.8 nm was 2.7 d B/cm. (C) 1995 John Wiley & Sons, Inc.