非常光线在单轴晶体中的折射定律

Refracrive Law of the Extraordinary Ray in Uniaxial Crystal

非常光线在各向异性媒质中传播不遵从折射定律 ,亦无确定的折射率 .从寻常光线和非常光线在单轴晶体中传播具有 2种不同子波面的假定出发 ,应用惠更斯原理 ,推导出非常光线在单轴晶体中传播的折射定律和折射率的表达式 .

The extraordinary ray neither obeys the refractive law,nor has certain index of refraction in nonisotropic medium. In this paper,by means of the hypothesis that the ordinary and the extraordinary rays have different wavelet front propagating in uniaxial crystal,and applying the Huygens′ principle generalized,the expressions of the refractive law and refraction index of the extraordinary ray propagating in uniaxial crystal are deduced.