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掺半花菁二氧化硅薄膜光学二次谐波产生

物理学报, 1997, 46(6): 1125-1130.
DOI: 10.7498/aps.46.1125
CSTR: 32037.14.aps.46.1125

SECOND HARMONIC GENERATION FROM UNPOLED HEMICYANINE-DOPED SILICA THIN FILM

Acta Phys. Sin., 1997, 46(6): 1125-1130.
DOI: 10.7498/aps.46.1125
CSTR: 32037.14.aps.46.1125
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  • 摘要

    报道了用溶胶凝胶技术制备掺入半花菁染料的二氧化硅薄膜．在不加电场极化条件下，由半花菁分子的自取向导致光学二次谐波产生，定量测得厚度为50nm薄膜的二阶非线性系数χ（2）为6.6pm/V，并初步研究了半花菁分子自取向的机理

     

    Abstract

    Hemicyanine-doped silica film was fabricated by the sol-gel technique.It was demonstrated for the first time that the self-alignment of hemicyanine molecules in the above film existed in the interfacial area.A χ（2） value of 6.6pm/V was obtained for a 50nm thick film.

     

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