各向同性固体界面非线性反射的实验研究

Experimental studies of nonlinear reflection on isotropic solid interface

实验测量了SV波入射到玻璃-空气，玻璃-铁、铜、铝界面上时反射的二次谐波SV波，研究了非线性反射效率与入射角以及材料的线性和非线性特性的关系，发现在某些入射角下，反射的二次谐波会有较大的振幅，报道了实验结果并和理论进行了比较。

Nonlinear reflection of SV shear wave at the isotropic solid interfaces is experimentallystudied. The reflected second harmonic SV shear wave is measured for glass-air, glass-iron, copperand aluminum interfaces. The relation of nonlinear reflective coefficient with the incident angle andlinear as well as nonlinear characteristics of the materials is thoroughly investigated. Comparison of theexperiment with the theory gives qualitatively agreement.