物理化学学报 >> 2001, Vol. 17 >> Issue (11): 995-999.doi: 10.3866/PKU.WHXB20011108

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适合倍频光波导的多层LB膜结构研究

王恭明;艾慧;刘秀;王文军;陶风岗   

  1. 复旦大学光科学与工程系, 复旦大学化学系，上海　200433
  • 收稿日期:2001-05-15 修回日期:2001-07-23 发布日期:2001-11-15
  • 通讯作者: 王恭明 E-mail:gmwang@fudan.edu.cn

Investigation of Suitable LangmuirBlodgett Multilayers Structure for Optical Double Frequency Waveguide Application

Wang Gong-Ming;Ai Hui;Liu Xiu;Wang Wen-Jun;Tao Feng-Gang   

  1. Department of Optical science and Engineering, Department of Chemistry, Fudan University, Shanghai　200433
  • Received:2001-05-15 Revised:2001-07-23 Published:2001-11-15
  • Contact: Wang Gong-Ming E-mail:gmwang@fudan.edu.cn

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摘要： 制备非中心对称的NMOB/CdA交替Y型累积LB膜，测量了它的二阶非线性光学特性.为了改善多层膜的有序性，研究在拉制NMOB/CdA多层膜时提高膜均匀性的两种方法，增强了它的二阶非线性光学特性.最后，制备光栅耦合的NMOB/CdA多层膜光波导,测量了它的Cerenkov相位匹配光学二次谐波产生.

关键词: 交替累积LB膜, 光学二次谐波产生, 固液相变点, 隔离聚合层, 光波导

Abstract: Noncentrosymmetric Ytype alternating NMOB/CdA multilayers were prepared for applications of LB films in waveguidetype second harmonic generation (SHG) devices. Two kinds of methods were put forward to improve the quality of NMOB/CdA alternating multilayers, which possess nearquadratic dependence of SHG intensities on layer number. 115 bilayers of NMOB/CdA multilayers film was fabricated which met Cerenkov phasematching condition, and SHG at 1064 nm wavelength from this waveguide was measured. The preliminary results show that the improved multilayer LB films are suitable for fabricating waveguide.

Key words: Alternated LB films, Second harmonic generation, Point of solidliquid transformation, Separating polymer layer, Optical waveguide