Quasiphase-matched second-harmonic generation using periodically photoisomerized azo dye doped polymer film waveguide

J. H. Jung, T. Kato, T. Kinoshita

    研究成果: Article査読

    5 被引用数 (Scopus)

    抄録

    A process to form a periodically poled polymer film by photoisomerization is described. A poled film of polymethylmetaclyrate containing 5 wt % of 4-(4-nitrophenylazo)aniline (Disperse Orange 3) was exposed to an Ar+ laser beam using a photomask of a 100 μm period grating. Disorientation of the chromophore molecule resulted in decrease of d33 in the photoisomerized domain. Quasiphase-matched second-harmonic generation is demonstrated experimentally using a processed film. Phase-matching was confirmed by tuning the fundamental wavelength around 1200 nm. The effective propagation length due to a tightly focused fundamental wave and the influence of the absorption loss are discussed. The depoling process by photoisomerization is compared with photobleaching, optical poling, and electron beam treatment.

    本文言語English
    ページ(範囲)801-806
    ページ数6
    ジャーナルJournal of Applied Physics
    90
    2
    DOI
    出版ステータスPublished - 2001 7 5

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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