A study of the thermal-induced nonlinearity of Au and Ag colloids prepared by the chemical reaction method

作者：Jia, Tingjian^*; He, Tingchao; Li, Pengwei; Mo, Yujun; Cui, Yuting

来源：Optics and Laser Technology, 2008, 40(7): 936-940.

DOI：10.1016/j.optlastec.2008.01.007

• metal colloidal solution
• Z-scan
• thermal-induced refractive index

The nonlinear optical properties of metal Au and Ag colloidal solutions prepared by the chemical reaction method were investigated by a single beam Z-scan technique. Under CW 633 nm. excitation, the Au and Ag colloidal solutions exhibited a large thermal-induced refractive index n(2). At the same time, the thermo-optic coefficients dn/dT of the Au and Ag colloidal solutions were obtained. The mechanism responsible for the process of nonlinear refraction was discussed in term of laser heating effect.

• 出版日期2008-10
• 单位商丘师范学院; 上海交通大学; 河南大学; 北京航空航天大学