We present a theoretical model of optical beam propagation in a nonlinear medium for determining the nonlinear refraction and nonlinear absorption accurately and simultaneously by a single Z-scan method. The model is based on the Gaussian decomposition method and symmetric analysis. In principle, accurate nonlinear refraction and nonlinear absorption can be obtained simultaneously by exact experimental data, no matter how much they are. The treatment procedure of Z-scan experimental data is demonstrated. (C) 2004 Optical Society of America.
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
Wang, Rui
Wei, Jingsong
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
机构:S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
Gao Xi-Cun
Hu Wei
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S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R ChinaS China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
Hu Wei
Zhang Tao
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机构:S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
Zhang Tao
Guo Qi
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机构:S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
Guo Qi
Wang Xin-Ai
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机构:S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China
Wang Xin-Ai
Long Xue-Wen
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机构:S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510006, Peoples R China