讨论了入射角、入射方位角、入射光波长、光栅栅距、介质折射率与矩形光栅衍射级次数目间的关系。
The relationships between the number of diffraction order and grating pitch, refractive index of medium, light wavelength, incidence Angle and azimuth Angle are investigated.
对于介质目标微波衍射成象，本文引入了WKB近似来模拟目标内部总场。
For microwave diffraction imaging, we use the WKB approximation to estimate the total field in the dielectric object.
当介质的吸收不可忽略时，对于耦合较强的光栅，参考光尺寸的增大反而会引起衍射效率的下降。
However, for strongly-coupled gratings if the absorption of medium cannot be ignored, the diffraction efficiency decreases with widening of reference beam.
对加入增益介质的F - P干涉仪的光谱特性与衍射光栅光谱仪的光谱特性作了定量对比。
This paper quantitatively compares the spectrum characteristics between Fabry-Perot interferometer with gain medium and diffraction grating spectrometer.
为了解决非均匀介质中的光传输问题，利用光学相位共轭波的时间反演特性，实现了对克斯林衍射积分公式的改进。
In order to study laser propagation in inhomogeneous medium, Collins formula was improved by using time inversion characteristic of optic phase conjugation wave.
在现代光学理论及应用中，经常要讨论周期结构介质中的散射问题，其中周期结构通常被称为衍射光栅。
The scattering problem in periodic structural mediums often discussed in the theory and applications of modern micro-optics, where periodic structural mediums are often called diffraction gratings.
弱调制介质光栅可等效为平板波导，经其衍射的高级次子波与波导模式耦合时，形成导模共振。
Weak modulated dielectric grating can be equivalent to planar waveguide. When it diffracted high-order spatial sub-wave is coupled with waveguide mode, a guided mode resonance is formed.
为了研究激光二维传播，开发研究了二维激光传播程序HEATER，考虑介质对激光的吸收、衍射和折射效应。
In order to study two-dimensional propagation of laser, we have also studied and used the two-dimensional laser propagation code, the HEATER.
光折变空间光孤子是指当光折变材料的自聚焦效应与光束的衍射发散作用相平衡时，在介质内无衍射向前传播的光束。
Photorefractive (PR) spatial solitons form when the self-focusing of a light beam inside the PR material exactly balances the diffraction of the beam.
该方法可用于斜入射情形下具有复杂结构和任意单元截面的介质栅近场及其衍射特性分析。
The presented scheme is useful to study the diffractionproblem of dielectric gratings with arbitrary shape and complicated configuration.
采用SEM、X射线衍射分别对复合介质的微观结构及其相组成进行了观察与分析，并获得了制备低损耗复合介质的最佳热压工艺制度。
The microstructure is observed by means of SEM and phase composition analyzed by XRD. On the basis of the investigation, an optimum heat press system is established.
采用X射线衍射、扫描电镜(sem)和光谱分析等测试技术，研究了多孔氧化铝介质膜的组成、结构以及光功能特性。
The structure and the optical functions of porous anodic films were studied by XRD, SEM and spectro-photometrical means.
利用严格模式理论对二维电磁各向异性浮雕型介质光栅的衍射特性进行了理论分析，并对其退化情形进行讨论。
Diffractive properties of two dimensional relief gratings made with electromagnetic anisotropic medium are theoretically analysed by using rigorous modal theory, and the degradation is discussed.
为了获得最优的衍射效率，应当根据介质的吸收率合理地设计光栅的几何尺寸。
It is suggested that for efficiency optimization of a lossy grating the geometrical dimension of the grating should be carefully designed.
以“热像”形成的衍射理论模型和分步傅里叶算法为基础，模拟研究了厚介质情况下“热像”的形成特点。
The model is based on a modification to the smooth-earth parabolic equation, and uses the split-step Fourier algorithm.
以“热像”形成的衍射理论模型和分步傅里叶算法为基础，模拟研究了厚介质情况下“热像”的形成特点。
The model is based on a modification to the smooth-earth parabolic equation, and uses the split-step Fourier algorithm.
应用推荐