Influence of Nonlinear Absorption on Z-Scan Measurements of Nonlinear Refraction
LIU Zhi-Bo, TIAN Jian-Guo, ZANG Wei-Ping, ZHOU Wen-Yuan, ZHANG Chun-Ping, ZHANG Guang-Yin
Photonics Center, Institute of Physics, Nankai University, Tianjin 300071
Influence of Nonlinear Absorption on Z-Scan Measurements of Nonlinear Refraction
LIU Zhi-Bo;TIAN Jian-Guo;ZANG Wei-Ping;ZHOU Wen-Yuan;ZHANG Chun-Ping;ZHANG Guang-Yin
Photonics Center, Institute of Physics, Nankai University, Tianjin 300071
关键词 :
42.65.-k ,
42.65.Jx ,
41.20.Jb
Abstract : A simple division of close-aperture Z-scan curve by open-aperture Z-scan is conveniently used to obtain the nonlinear refractive index. It usually causes an error, which even reaches up to over 50% for Z-scan measurements with a pinhole or a medium with a high nonlinear absorption. Here the influence of nonlinear absorption on the determination of nonlinear refraction by Z-scan is analysed. We suggest that the error can be reduced greatly by a simple analysis of the symmetric features (symmetric method) of Z-scan curves from the
closed-aperture Z-scan curve. As an example, experiments were carried out on CS2 solution of C60 derivative, symmetric method agrees well with exact simulation.
Key words :
42.65.-k
42.65.Jx
41.20.Jb
出版日期: 2003-04-01
:
42.65.-k
(Nonlinear optics)
42.65.Jx
(Beam trapping, self-focusing and defocusing; self-phase modulation)
41.20.Jb
(Electromagnetic wave propagation; radiowave propagation)
引用本文:
LIU Zhi-Bo;TIAN Jian-Guo;ZANG Wei-Ping;ZHOU Wen-Yuan;ZHANG Chun-Ping;ZHANG Guang-Yin. Influence of Nonlinear Absorption on Z-Scan Measurements of Nonlinear Refraction[J]. 中国物理快报, 2003, 20(4): 509-512.
LIU Zhi-Bo, TIAN Jian-Guo, ZANG Wei-Ping, ZHOU Wen-Yuan, ZHANG Chun-Ping, ZHANG Guang-Yin. Influence of Nonlinear Absorption on Z-Scan Measurements of Nonlinear Refraction. Chin. Phys. Lett., 2003, 20(4): 509-512.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I4/509
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