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Linear and nonlinear optical properties of Ag:Bi2O3 composite films

Qian Shi-Xiong Zhu Bao-Hua Wang Fang-Fang Zhang Kun Guo Li-Jun Ma Guo-Hong

Linear and nonlinear optical properties of Ag:Bi2O3 composite films

Qian Shi-Xiong, Zhu Bao-Hua, Wang Fang-Fang, Zhang Kun, Guo Li-Jun, Ma Guo-Hong
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  • Received Date:  14 September 2006
  • Accepted Date:  12 December 2006
  • Published Online:  20 July 2007

Linear and nonlinear optical properties of Ag:Bi2O3 composite films

  • 1. (1)复旦大学物理系,上海 200433; (2)河南大学光学与光电子技术研究所,物理与信息光电子学院,开封 475001; (3)上海大学理学院,上海 200444

Abstract: On the basis of measurements and theoretical analysis, linear and nonlinear optical properties on the Ag:Bi2O3 composite films with different Ag concentrations were investigated. The relationship between the Ag concentrations and the surface plasmon resonance (SPR) of Ag:Bi2O3 composite films were characterized by UV-VIS-NIR spectroscopy, and the dependence of third-order nonlinear susceptibility of composite films on Ag concentrations was investigated by picosecond Z-scan technique with different excitation wavelength (532nm and 1064nm). The analysis of optical properties of these films was carried out using the theories of surface plasmon resonance and localized field enhancement respectively. From the experimental and theoretical results, the dependence of third-order nonlinear susceptibilities χ(3) on Ag concentration was shown. With Ag concentration around 35% and the excitation wavelength at 532nm near the surface plasmon resonance (560nm—622nm), the third-order nonlinear susceptibility χ(3) showed a maximum value of 2.4×10-9 esu.

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