Stamnes J J, Dhayalan V
Department of Physics, University of Bergen, Norway.
J Opt Soc Am A Opt Image Sci Vis. 2001 Jul;18(7):1662-9. doi: 10.1364/josaa.18.001662.
We study the transmission of a two-dimensional (2-D) TM Gaussian beam through a plane interface between an isotropic medium (e.g., air) and a uniaxially anisotropic crystal. The optic axis of the crystal is taken to be in the plane of incidence but is arbitrarily oriented relative to the interface normal. We show that, in the paraxial approximation, a nontruncated transmitted 2-D TM Gaussian beam inside a uniaxial crystal can be expressed in a form similar to that of a scalar Gaussian beam that propagates in a homogeneous medium. We also show that the transmitted beam corresponding to an incident 2-D TM Gaussian beam with its main propagation direction along the interface normal is tilted inside the crystal by the same angle as is the transmitted axial ray that corresponds to a normally incident ray.
我们研究二维（2-D）横磁（TM）高斯光束通过各向同性介质（如空气）与单轴各向异性晶体之间的平面界面的传输。晶体的光轴位于入射面内，但相对于界面法线方向任意取向。我们表明，在傍轴近似下，单轴晶体内未截断的透射二维TM高斯光束可以用与在均匀介质中传播的标量高斯光束类似的形式表示。我们还表明，对应于主传播方向沿界面法线的入射二维TM高斯光束的透射光束在晶体内倾斜的角度与对应于垂直入射光线的透射轴向光线倾斜的角度相同。
