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A study of the thermal-induced nonlinearity of Au and Ag colloids prepared by the chemical reaction method |
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| Authors: | Tingjian Jia Tingchao He Pengwei Li Yujun Mo Yuting Cui |
| Affiliation: | aDepartment of Physics and Information Engineering, Shangqiu Normal University, Shangqiu 47600, China bDepartment of Physics, Shanghai Jiao Tong University, Shanghai 200240, PR China cDepartment of Physics, School of Science, Beijing University of Aeronautics & Astronautics, Beijing 100083, China dCollege of Physics and Electronics, Henan University, Kaifeng 475004, PR China |
| Abstract: | 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 n2. 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. |
| Keywords: | Metal colloidal solution Z-scan Thermal-induced refractive index |
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