The mechanism of Z - scan technique is introduced. It 's application to measuring nonlinear refractive index and nonlinear absorption coefficient for nonlinear optical medium is made.
介绍了Z -扫描技术的基本原理，以及Z -扫描技术在测量非线性光学介质的非线性折射率、非线性吸收系数等方面的应用。
Because of the nonlinear effect caused by flow pattern, oil diameter and absorption coefficient etc, it is difficult to establish the measurement model.
但由于受流型、油泡直径及吸收系数等因素的非线性影响，使得测量模型难于建立。
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