光波p分量在单轴晶体表面反射和折射的相位特性

根据单轴晶体的双折射和双反射性质，通过数值计算研究了光轴在入射面内并与晶体界面成任意角时光波p分量在单轴晶体表面反射和折射的相位特性.结果表明,光轴取向对相位变化有较大影响,光从光疏各向同性介质射入单轴晶体时，光轴方向改变反射光p分量的相位突变点，但对折射光p分量相位无影响.光从光密各向同性介质射入单轴晶体未发生全反射时，光轴方向同时影响p分量反射光和折射光的相位突变|发生全反射后，光轴方向影响反射光p分量的相位变化曲线.从单轴晶体出射到光疏各向同性介质未发生全反射时，光轴方向改变反射光p分量的相位跃变规律，折射光p分量在光轴方向和晶面成小角度时在布儒斯特角附近发生相位突变|发生全反射后，反射光p分量的相位变化曲线随光轴方向的改变发生较大变化.

Phase Characteristics of p-polarized Light Reflecting and Refracting at the Uniaxial Crystal Surfaces

Based on the phenomena of double refraction and double reflection in crystals,phase characteristics of p-polarized light reflecting and refracting at the boundary between an isotropic and a uniaxial crystal are studied by numerical evaluation.Results show that the direction of optical axis has important influence on phase properties.When light is incident from an optically thinner isotropic medium upon a crystal,the direction of optical axis affects the phase shift of reflected p-polarization light but has no effect on the phase of refracted light.When light is incident from an optically denser isotropic medium upon a crystal with the incident angle less than angle of total reflection,the direction of optic axis affects both the phase shift of reflected and refracted p-polarization light.If the incident angle is larger than critical angle,the optical axis has influence on the curve of phase change of reflected p-polarization light.For the case of light enters into an optically thinner isotropic medium from a crystal with the incident angle less than angle of total reflection,the direction of optical axis will change the way of phase shift of reflected p-polarization light.And the refracted p-polarization light undergoes a phase shift near the Brewster’s angle when the angle between the optical axis and crystal boundary is small.After the incident light is reflected totally,the curve of phase change of reflected p-polarization light varies with the direction of optical axis.