Uniaxial crystals have one crystal axis that is different from the other two crystal axes (i.e.
例句与用法
1.
Crystals of this type, having only one optic axis, are called uniaxial crystals . 这种只有一根光轴的晶体称为单轴晶体。
2.
The coefficients of reflection and transmission on the interface of two uniaxial crystals 光在两单轴晶体分界面的反射与透射系数
3.
The expression of the third - order nonlinear polarization of self - interaction in uniaxial crystals 单轴晶体中三阶非线性自作用极化强度矢量的计算
4.
The coefficients of reflection and transmission on the interface of two uniaxial crystals under normal incidence 正入射条件下光在两单轴晶体分界面的反射与透射系数
5.
Not only general suitability of this method is independent of gratings model , geometry structure , medium properly and crystal axis orientation ( including uniaxial crystals and biaxial ones ) , but also physical concepts are clear and formula is concise 该方法不仅不受光栅模型、几何结构、介质性质和晶体取向(包括单轴和双轴晶体)的影响而具有普遍适用性，而且其物理概念清晰、公式简洁。
6.
For the negative uniaxial crystal material , the principal mode is a hybrid guided mode , which can also be excited by the light at any frequency , but when the single mode propagation condition can not be satisfied , some of the higher order hybrid guided modes will exist in the waveguide 对于负单轴晶体，波导的主模是混合模hgm _ 0模，该模式同样可被任何频率的光波所激励；当光波波长满足一定条件时，波导内传输单模，否则，将激励起高阶混合模。
7.
The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation , there are te mode and tm mode in this special waveguide , but the principal mode is different of the character of the uniaxial crystal , the principal mode is the principal mode of te mode for the negative uniaxial crystal , but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane , for the positive uniaxial crystal material , the principal mode of the waveguide is a te wave , which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition , there will be only the principal mode propagating in the waveguide , otherwise some of the higher order modes can be excited , which are neither te modes , nor tm modes , but the hybrid guided modes 本文就是在此背景下，利用金属波导和单轴晶体的一些特性，结合麦克斯韦方程组和波导的边界条件，从三种不同的情况研究了光在对称平面单轴晶体金属波导(波导层是单轴晶体，两个波导界面均为金属)内的传输特性，其主要贡献为，首次解析地得到了这种波导结构下模式场的精确解，并发现了一些有用的特性： ( 1 )模式场的性质因单轴晶体的性质不同而异； ( 2 )当单轴晶体光轴位于波导界面法方向与传输方向构成的平面内时，波导中传输te波和tm波，只不过其主模因单轴晶体的性质不同而异，当波导层介质为负单轴晶体时，波导主模是te波主模，而波导层介质为正单轴晶体时波导主模是tm波主模。 ( 3 )当单轴晶体光轴位于波导面内时，对于正单轴晶体，波导的主模是横电波te _ 0模，任何频率的光波均可激励该模式；当光波波长满足一定条件时，波导内传输单模，否则，将激励起高阶模式，高阶模即匪te波，也匪tm波，而是两者耦合而成的混合模。
8.
Because of its complexity , no analytic solution can be got . to better understand the propagation characteristics of the waveguide , it is necessary that analytic solution should be got for simpler structure . based on the background , in this paper , we discuss the propagation characteristic of ray in the planar symmetric metal - clad uniaxial waveguide ( the waveguide layer is uniaxial crystal 但是以前人们只局限于对非对称金属波导(即在各向异性介质波导层一面上镀有金属膜)的讨论，由于其复杂性，他们没有给出解析解，为了能更好的解析讨论其传输特性，需要讨论较简单的波导结构。
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