中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (3): 23-27.

• 研究论文 • 上一篇    下一篇

多异氰酸酯交联型二阶非线性光学聚合物中的极化与松弛

杨春才1, 王化滨1, 景遐斌1, 王佛松1, 李加2, 王淑梅2, 邢汝斌2   

  1. 1. 中国科学院长春应用化学研究所高分子物理联合开放实验室, 长春 130022;
    2. 中国科学院长春物理研究所, 长春
  • 收稿日期:1994-08-18 修回日期:1995-01-17 出版日期:1995-06-10 发布日期:1995-06-10
  • 基金资助:
    国家自然科学基金资助课题

Orientaion and Relaxation in a Polyisocyanate-Crosslinked Second Order Nonlinear Optical Polymer

Yang Chuncai1, Wang Huabin1, Jing Xiabin1, Wang Fosong1   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
    2. Changchun Institute of Physics, Chinese Academy of Sciences, Changchun
  • Received:1994-08-18 Revised:1995-01-17 Published:1995-06-10 Online:1995-06-10

PDF

405

被引次数

6 | 2

摘要： 通过4,4'-硝基偶氮苯甘油单醚与六亚甲基二异氰酸酯的缩二脲在电场下极化交联反应合成交联型二阶非线性光学聚合物,利用二次谐波和紫外可见吸收光诸对该聚合物的取向及松弛进行了研究.测试了二阶非线性极化率χ(2)、二阶非线性光学系数d33和电光系数γ33表明上述极化交联聚合物的d33在10-8～10-7esu,在测试时间范围内基本不随时间而衰减.

关键词: 交联聚合物, 二次谐波, 二阶非线性光学系数d33, 电光系数γ33

Abstract: The orientation and relaxation of a crosslinked and poled polymer based on the re-action of glycerin monoether of 4-[(p-nitrophenyl)azo] phenol with biuret of hexamethylenediisocyanate have been studied by UV-Vis spectra and second harmonic generation (SHG)techniques.Second order nonlinear susceptibility χ(2),second harmonic coefficient d33 andelectro-optic coefficientγ33 were determined.The d33 of the crosslinked and poled polymerwas in the range of 10-8～10-7 esu and kept constant for a period of 100h after poling and crosslinking.

Key words: crosslinked polymer, second harmonic generation, second harmonic coefficient, electro-optic coefficient

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