• 讨论了入射角、入射方位角、入射波长光栅介质折射率矩形光栅衍射级次数目关系。

    The relationships between the number of diffraction order and grating pitch, refractive index of medium, light wavelength, incidence Angle and azimuth Angle are investigated.

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  • 对于介质目标微波衍射成象,本文引入WKB近似模拟目标内部总场

    For microwave diffraction imaging, we use the WKB approximation to estimate the total field in the dielectric object.

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  • 介质吸收不可忽略时,对于耦合较强光栅参考光尺寸的增大反而会引起衍射效率下降

    However, for strongly-coupled gratings if the absorption of medium cannot be ignored, the diffraction efficiency decreases with widening of reference beam.

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  • 加入增益介质F - P干涉仪光谱特性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.

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  • 为了解决非均匀介质中的传输问题利用光学相位共轭时间反演特性,实现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.

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  • 现代光学理论应用中,经常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.

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  • 调制介质光栅等效平板波导,经衍射的高级次子波导模式耦合时,形成共振

    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.

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  • 为了研究激光传播,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.

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  • 折变空间孤子是指光折变材料聚焦效应与光束衍射发散作用相平衡时,在介质衍射向前传播光束。

    Photorefractive (PR) spatial solitons form when the self-focusing of a light beam inside the PR material exactly balances the diffraction of the beam.

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  • 方法可用于斜入射情形下具有复杂结构任意单元截面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.

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  • 采用SEMX射线衍射分别对复合介质微观结构及其组成进行观察分析,并获得了制备低损耗复合介质最佳热压工艺制度

    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.

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  • 采用X射线衍射、扫描电镜(sem)光谱分析等测试技术,研究了多孔氧化铝介质的组成结构以及功能特性。

    The structure and the optical functions of porous anodic films were studied by XRD, SEM and spectro-photometrical means.

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  • 利用严格模式理论电磁各向异性浮雕介质光栅衍射特性进行理论分析退化情形进行讨论。

    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.

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  • 为了获得最优衍射效率应当根据介质吸收率合理地设计光栅几何尺寸

    It is suggested that for efficiency optimization of a lossy grating the geometrical dimension of the grating should be carefully designed.

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  • 以“热像”形成衍射理论模型分步里叶算法基础,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.

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  • 以“热像”形成衍射理论模型分步里叶算法基础,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.

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