单轴晶光率体主截面内离散角的研究

A Study on the Walk-Off Angle in the Optical Indicatrix's Principal Section of Uniaxial Crystal

光在各向异性晶体中传播时,e光的光线方向与光波法线方向一般有一个较小的夹角,即离散角α。对光学器件设计和光路分析而言,这是经常需要考虑的问题。在单轴晶光率体主截面内,根据晶体光学相关理论,采用一种非常简便的数学方法,得到了不同情况下离散角的一般表达式。

When light transmits through aeolotropic crystal, as far as extraordinary light is concerned, there is a smaller included angle between the ray and the wave normal in general, which is usually called walk - off angle. We should often think of it when we design optical devices and analyze beam path. According to the related theory of crystal optics, this article will deduce the calculation formula of walk - off angle in the optical indicatrix＇ s principal section of the uniaxial crystal by a simple mathematical method.