Self-organized quasi-phase matching in frequency doubling using nonlinear-optical photoconducting polymers

Summary form only given. Recently, in nonlinear-optical (NLO) photoconducting polymers, photorefractive gratings have been observed and relatively high diffraction efficiencies have been reported. It is considered that the grating is formed with periodically modulated birefringence and electro-optic coefficient through reorientation of NLO chromophores, which is induced by the space-charge field. We fabricated a thin-film waveguide of an NLO photoconducting polymer and first observed self-organized quasi-phase matching in optical second-harmonic (SH) generation.