4-溴查耳酮的二阶非线性光学性质研究

Study on the Second-Order Nonlinear Optical Properties of 4?Bromochalcone

计算了 4 溴查耳酮 (PBC)的二阶非线性光学系数 β,测量了其二次谐波产生 (SHG)效率和截止吸收波长λcut-off,并研究了PBC的微观和宏观非线性效应之间的关系 .结果表明 ,PBC有很强的SHG效应和较短的截止吸收波长 ,Br取代基和晶体中分子的趋向在影响材料的非线性和透光性方面起着重要作用 .

Calculated the molecular second order nonlinear optical (NLO)polarizability β of 4 bromochalcone (PBC),and measured its second harmonic generation (SHG) efficiency,as well as the cut off wavelength λ cut-off .Studied the relationships between the microscopic and macroscopic nonlinear properties.PBC has very strong SHG effect and very short cut off wavelength.The bromo group and the molecular packing in the crystal act as important roles in the nonlinearity and the transparency of the material.