Article
  • Preparation and Nonlinear Optical Properties of Sol-Gel Silica Glass with Hemicyanine-type Chromophore
  • Min YH, Lee KS, Yoon CS, Kim KS, Moon KJ, Shim HK
  • Hemicyanine형 염료가 도입된 Sol-Gel 실리카 유리의 제조 및 미선형 광학 특성
  • 민유흥, 이광섭, 윤춘섭, 김경수, 문기정, 심홍구
Abstract
Inorganic-organic hybrid materials which incorporated a hemicryanine-type chromophore in silica matrix for nonlinear optics applications were prepared by sol-gel processing technique. According to the AFM studies on the film samples of resulting hybrids, the surface roughness of both cured and poled sot-gel films was within 2nm. In the case of the sample subjected to high poling voltage, surface damage due to the inhomogeneous corona discharge was not significant. The electro-optic coefficient (γ33) obtained from the different sol-gel processing conditions, poling voltage and time, ranged from 1.6 to 5.0 pm/V. It was found that the sol-gel films exhibited a stable alignment of the chromorphores, as observed by no decay even after 47 days.

비선형 광학 소자로의 응용을 위해 sol-gel 가공방법으로 hemicyanine형의 염료가 실리카 유리 매트릭스에 결합된 무기-유기물 복합체를 제조하였다. 스핀 코팅에 의해 얻은 박막을 경화 및 극성 배향시킨 후 AFM을 이용하여 표면을 관찰한 결과 거칠기가 2nm 이하로 깨끗하고 편평하였으며 높은 극성배향 전압에서도 표면손상이 그다지 크지 않았다. 이 박막의 광학 비선형성은 박막의 가공조건, 극성배향 전압 및 시간에 따라 γ33=1.6∼5.0pm/V의 값을 나타냈으며 상온에서 47일간 방치한 후에 측정된 비선형 계수값이 초기의 값과 유사하여 이 복합체 박막의 안정성이 탁월함을 확인할 수 있었다.

Keywords: sol-gel processing; hemicyanine-type dye; optical nonlinearity; stability

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1995; 19(5): 569-577

    Published online Sep 25, 1995