Unlike a normal lens, which compresses or changes the actual shape of a light wave through diffraction, a time lens magnifies or compresses the time of a light wave through dispersion.
不同于通常的透镜通过衍射来压缩或者改变光的形态，时间透镜通过光的弥散放大或者压缩光波的时间。
But for now let's simply say that we have a diffraction which we know occurs only by wave-like behavior and it involves the use of x-rays. Why x-rays?
但现在让我们来简单假设一下，我们知道，只波才发生衍射，而且衍射涉及了X光的使用，为什么是X光？
This paper proclaims similarity of distribution between light strength of monochromic Fraunhofer's single - slit diffraction and square - wave frequency spectrum.
本文揭示了单色光夫琅和费单缝衍射的光强分布与矩形波频谱分布之间的相似性。
The mathematical models and their limitative condition of radar electromagnetic wave propagated in interference region, intermediate region and diffraction region are set up respectively.
分别建立雷达电磁波在干涉区、中间区和绕射区传播的数学模型和它们适用的边界条件。
The diffraction characteristics of the phase mask for UV-written fiber grating is investigated using rigorous coupled-wave theory.
本文利用严格耦合波理论对用于光纤光栅制作的相位掩模的衍射特性进行了深入的研究。
The factors which influence holography diffraction efficiency, the Angle selectivity of volume holography and wavelength bandwidth are analyzed with the coupled wave theory.
利用耦合波理论分析了影响体积全息图的衍射效率的因素、体积全息图的角度选择性以及波长带宽等方面。
Conclusion that result of diffraction of light is rectilinear propagation in limited condition is demonstrated from wave theory.
从波动理论出发，证明极限情况下光的衍射结果就是光的直线传播。
This paper describes in detail the principles, steps and methods of drawing isogram of wave diffraction by computer.
本文详细介绍了计算机绘制波浪绕射图的步骤、要点和方法。
The Angle distribution and plane distribution of the diffraction tomography with ultrashort pulse incident wave was simulated.
模拟计算了超短脉冲波场入射下其衍射层析的角分布与面分布。
The rigorous coupled-wave theory is used to analyze the characteristics of grating diffraction, and the results indicate that this method produces no phase distortion.
运用严格的光栅衍射耦合波理论分析光栅的衍射特性，发现该方案不会引入相位畸变。
A set of coupled wave equations for multiple dimensional acoustooptic diffraction with multiple acoustic waves along different directions is put forward and its solutions are derived.
本文建立了沿不同方向的多个超声波信号作用下的多维声光衍射的耦合波方程，并求出相应的解。
The results obviously demonstrate wave diffraction in harbor on condition of boundary reflection. Distribution of wave field in harbor is relatively appropriate.
结果比较清楚地反映出在考虑边界反射条件下波浪绕射情况，港内波浪场的分布比较合理。
Finally, the computation of wave reflection and diffraction in the Dalian Harbor indicates that the present method can be widely used for computing the wave field in harbors.
对大连港区内的波浪折射绕射进行了计算，表明本方法可以应用于实际港口的波浪场计算中。
In this paper, the combined effect of wave refraction and diffraction, and the variation of longshore wave breaker height are considered.
文中还考虑了波浪折射、绕射的综合影响，以及沿岸波高不等引起的沿岸输沙率变化。
The formula of numerical computing is presented with discretion for Fresnel diffraction and phase numerical reconstruction of wave front.
从光的菲涅耳衍射、波前相位重构入手，对连续信号进行了离散化处理，给出了数值计算公式。
Using the method of rigorous coupled-wave theory to compute the diffraction efficiency of a grating, the program for calculating diffraction efficiency for both te and TM polarization is made.
通过利用严格的耦合波理论计算光栅衍射效率的方法，分别编制出了计算te波和TM波的衍射效率程序。
The state of electron is described by wave function. Intensity distribution of single slit electron diffraction is derived by probability distribution of electron momentum.
电子状态用波函数描述，由电子动量的概率分布，得到电子单缝衍射的强度分布。
Nature of Light, Geometrical Optics, and Gaussian Approximation, Wave Optics, Interference of Light, Coherence, Polarization of Light, Diffraction of Light.
光的性质、波动光学、几何光学及高斯近似、光的干涉、相干性、光的偏振、光的绕射、一些重要的应用实例。
The basic formula of the diffraction tomography with time-varied incident wave was established.
建立了时变入射波下的衍射层析基本公式。
Brsed on the wave theory of optics, the affect caused by the phase error in Fresnel near-field diffraction equation is analysed.
根据波动光学的理论，对菲涅耳近场衍射公式误差相位的影响进行了分析。
With light wave diffraction theory, the mathematical model of optical field at the recording layer is developed for magneto-optical disk.
运用光波衍射理论，针对磁光盘建立了记录光场的数学模型。
The numerical method of coupled boundary integral equation and finite element has been used to compute the forces of wave diffraction and radiation on large two dimensional objects.
本文中采用边界积分方程和有限元耦合的数值方法，计算了二维波浪绕射和辐射问题。
Through experiments, it's found that some of light diffraction cannot be explained well using existing wave theories of light.
通过实验发现有一些光的衍射现象，如果使用现时光的波动性理论无法很好的解释清楚。
The two dimentional problems of the diffraction of the electromagnetic wave by a perfect arbitrary form conductor inbedded in the electromagnetic field are discussed in detail.
本文详细地讨论了置于电磁场中的任意形状的完全导体对电磁波绕射的二维问题；
The diffraction phenomena by a circular aperture or a phase plate is analyzed by the boundary diffraction wave theory, the analytic expression of its axial intensity is obtained.
本文根据边界波衍射理论分析了圆孔及相位片的衍射现象，得出其轴上光强的解析表达式，并对高斯光束经相位片衍射后的轴上光强进行了数值计算和讨论。
This paper presents a method for calculating travel time of diffracted wave from velocity model and for making diffraction migration.
本文提出一种按速度模型计算绕射波射线旅行时和进行绕射归位的方法。
Collins formula, which describes the diffraction of light wave passed through a near-axis optical system, and its inverse calculation expression are presented in this paper.
给出描述光波通过傍轴光学系统衍射的柯林斯公式及其逆运算表达式。
A diffraction selectivity theoretical analysis method of volume gratings with wave front phase encoding is proposed.
论文给出了分析随机波前相位编码体光栅选择性衍射的一种方法。
A diffraction selectivity theoretical analysis method of volume gratings with wave front phase encoding is proposed.
论文给出了分析随机波前相位编码体光栅选择性衍射的一种方法。
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