Abstract

?erenkov-radiation-type second-harmonic generation was observed in a nonlinear-optical photoconducting polymer thin-film waveguide. Quasi-phase matching was self-organized by a refractive-index grating gradually formed under illumination by a guided fundamental wave. The polymer used was composed of nonlinear-optical 4<sup>?</sup> -nitrobenzylidene-3-acetamino-4-methoxyaniline, photosensitizing and electron-transporting 2, 4, 7–trinitro-9–fluorenone, and hole-transporting and photoconductive <i>N</i> -vinylcarbazole in matrix poly(methyl methacrylate).

© 1997 Optical Society of America

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