Declercq Nico F, Briers Rudy, Degrieck Joris, Leroy Oswald
Department of Mechanical Construction and Production, Soete Laboratory, Ghent University, 9000 Gent, Belgium.
IEEE Trans Ultrason Ferroelectr Freq Control. 2002 Nov;49(11):1516-21. doi: 10.1109/tuffc.2002.1049733.
The theory, and the use at normal incidence, of shear-vertically polarized waves (with polarization vector in the plane containing the incident wave vector and the normal on the interface) using the mode conversion method has been tackled by others. Here we develop the theory for shear-horizontally polarized incident waves (with polarization vector perpendicular to both the normal on the interface and the incoming wave vector). We take into account normal incidence as well as oblique incidence. For normal incidence, we discover the generation of Love waves. If oblique incidence is considered, we discover the existence of a Brewster angle of incidence, comparable with the Brewster angle in optics, in which a diffraction grating can be used as a polarization filter.
其他人已经探讨了使用模式转换方法的垂直剪切极化波（极化矢量在包含入射波矢量和界面法线的平面内）的理论及其在正入射时的应用。在此，我们推导水平剪切极化入射波（极化矢量垂直于界面法线和入射波矢量两者）的理论。我们考虑了正入射和斜入射情况。对于正入射，我们发现了乐甫波的产生。如果考虑斜入射，我们发现存在一个与光学中的布儒斯特角相当的布儒斯特入射角，在该角度下衍射光栅可用作偏振滤波器。
