We present a process for periodically poling using molecular orientation control in cross-linked polymer. Glycidylmethacrylate (GMA) was polymerized by 2,2'-azobisbutyronitrile in tetrahydrofuran at 60/spl deg/C. for 1 hour. Poly-GMA dissolved in dimethylformamide containing nonlinear optical chromophore, disperse red 1 (DR1) or disperse orange 3 (DO3), and 4,4'-diaminodiphenylmethane as cross-linker was spin-coated on pyrex glass substrates. The films were dried and heat-treated for cross-linking at 100/spl deg/C for 1 hour. The chromophore molecule was fixed in the crosslinked polymer network. To form a periodical structure the films were patterned by photolithography and reactive ion etching using O/sub 2/ plasma. Poly-GMA without cross-linker containing the chromophore was spin-coated to fill the etched grating grooves. The films were poled at 100/spl deg/C for 1 hour. The films were periodically poled because the cross-linked part was not poled due to the raised transition temperature.


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    Title :

    Periodically poling by chromophore molecule orientation control in cross-linked polymer film [for SHG]


    Contributors:
    Kinoshita, T. (author) / Kato, M. (author)


    Publication date :

    2001-01-01


    Size :

    79282 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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