光学学报, 2003, 23 (1): 18, 网络出版: 2006-06-27
萘二甲酰亚氨基席夫碱类液晶材料的三阶非线性光学性能研究
Third-Order Optical Nonlinearity in Schiff-Base Liquid Crystal with Naphthalimide
非线性光学 三阶非线性 液晶材料 席夫碱类 萘二甲酰亚氨基 nonlinear optics third order optical nonlinearities liquid crystal schiff base naphthalimide
摘要
采用波长λ=532 nm和脉宽τ0=35 ps的Nd∶YAG锁模脉冲激光,运用双光束前向简并四波混频(DFWM)的方法,测量了两种萘二甲酰亚氨基席夫碱类液晶材料的三阶非线性效应,测得其离共振三阶非线性系数χ(3)及响应时间,计算了它们的超极化率γ(3)和非线性折射率n2,同时探讨了它们的非线性形成机制.
Abstract
By using Nd∶YAG mode locked pulse laser (λ=532 nm, τ 0=35 ps), the third order nonlinear optical susceptibility χ (3) , and time response properties of liquid crystals containing Schiff base and Naphthalimide are measured with forward degenerate four wave mixing (DFWM). The corresponding nonlinear refractive index coefficient n 2, second hyperpolarizability γ (3) are calculated. The mechanism for their nonlinear effect is discussed.
牛瑞民, 朱小蓉, 孙真荣, 张迎超, 苏建华, 田禾. 萘二甲酰亚氨基席夫碱类液晶材料的三阶非线性光学性能研究[J]. 光学学报, 2003, 23(1): 18. 牛瑞民, 朱小蓉, 孙真荣, 张迎超, 苏建华, 田禾. Third-Order Optical Nonlinearity in Schiff-Base Liquid Crystal with Naphthalimide[J]. Acta Optica Sinica, 2003, 23(1): 18.
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