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

✍ Scribed by Tingjian Jia; Tingchao He; Pengwei Li; Yujun Mo; Yuting Cui

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 436 KB
• Volume: 40
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2008.01.007

✦ Synopsis

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.