利用光束波前畸变扫描研究介质的非线性光学性质

Study on Optical Nonlinearity of Materials by Scanning Wavefront Distortion

利用光束波前畸变扫描来研究材料的非线性光学性质是近来提出的一种简便有效的方法，着重讨论了在检测中材料的非线性因素所产生的影响，特别是样品的吸收机制对检测带来的限制，并提出非线性吸收效应所产生的光束畸变过程。

A model for measurement of nonlinear optical properties by scanning laser beam distortion has been studied. The cubic nonlinear susceptibility used has both absorptive and refractive components. We describe the experimental apparatus and present a comprehensive theoretical analysis including cases where linear and nonlinear absorption are combined. The practical measurement procedures are discussed for these parameters.