摘要
描述了主链含过渡金属（Ｐｄ或Ｎｉ）的多炔聚合物的三阶非线性光学特性。通过四波混频（ＤＦＷＭ）实验，发现其具有高的三阶非线性光学系数，得到｜ｘ（３）｜≌３×１０－１３ｅｓｕ，分子超极化率ｙ≌５×１０－３１ｅｓｕ，并且在可见和红外区域有较小的吸收系数，这使之成为一种具有许多潜在用途的非线性光学新材料。
A large number of polymeric materials have been investigated for their large third-order nonlinear susceptibility. Here a series of new nonlinear optical polyyne-polymers containing Pd or Ni in the main chain are described. It is decovered that the metal polyynepolymers are showed to have large X(3) value (X(3) ≌ 3 X 10-13 esu, γ ≌ 5 X 10-31 esu) and low absorption in the visible and the near infrared regions, making them potentially useful in many applications according to the results of Degenerate Four-Wave Mixing (DFWM).
出处
《中国激光》
EI
CAS
CSCD
北大核心
1995年第11期861-864,共4页
Chinese Journal of Lasers
基金
国家自然科学基金
关键词
非线性光学
物质结构
多炔聚合物
过渡金属
third-order nonlinear susceptibility, polyyne-polymers, degenerate four-wavemixing (DFWM)
