涅

Based on Fresnel Kirchhoff diffraction integral equation, a mathematical model on the diffraction of nonlinear optical media to Gaussian beam is established.

从菲涅耳基尔霍夫衍射积分公式出发，建立了非线性光学介质对高斯光束的衍射模型，通过数值积分，得到了与实验现象符合的计算结果。

Durnin are analyzed basing on analytic expression for annular Fresnel diffraction.

从圆环菲涅耳衍射的解析表达式分析了由J。

The intensity distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory.

应用菲涅耳衍射光强分布理论以及光轴上光强分布理论对波纹光阑在一定条件下的作用范围进行了分析。

Far field distributions of in-phase mode and out-of-phase mode were calculated using Fresnel diffraction formula of one-dimension on the basis of near field amplitude distribution.

在同相模和异相模近场分布的基础上，利用1维情况下的菲涅耳衍射公式计算了其远场分布。

Some issues in recording and reconstruction of near distance digital holography are discussed where the recording distance is shorter than the Fresnel diffraction distance.

讨论了记录距离小于菲涅耳衍射要求的近距离数字全息记录和再现问题。

Calculation of diffraction ; Fresnel diffraction ; Fourier transform

衍射计算；菲涅耳衍射；傅里叶变换

On the basis of theoretical analysis of digital holography, the preliminary study carries out through computer simulation and experiments. The main work is as follows:Firstly, on the basis of off-axis Fresnel diffraction, the principles of optical holography and digital holography are introduced. Besides, the theories such as recording digital hologram, numerical reconstruction and the related digital image processing methods are analyzed.

本论文从理论分析、计算机仿真和实验三个方面对数字全息技术进行了初步的研究，主要完成了以下工作：首先，介绍了传统的光学全息术和数字全息技术的基本原理，以离轴菲涅耳全息为例对数字全息的记录条件、数值重现算法、以及相关的数字图像处理方法进行了详尽的理论分析。

Applying Fresnel diffraction theory, this technique is proved to enlarge the equivalent dimension of CCD and increase the cutoff frequency of optical system, so this method can improve the imaging resolution of digital holography.

用菲涅耳衍射理论证明了该技术可有效增大CCD探测器的等效尺寸和系统截止频率，从而提高数字全息成像分辨率。

Therefore the Fresnel integral should be used to obtain the true intensity distribution on the output plane.

为了在输出面上得到真实的光强分布，应采用菲涅耳积分计算其变换矩阵。

Computing complex argument Fresnel integral is a difficult problem meeting in electromagnetic scattering of lossy dielectric wedges.

摘要复宗量菲涅耳积分的计算，是有耗介质劈电磁散射中遇到的一个难题。

My first article for Screen Power Magazine, which is to this day is the official magazine of Jackie Chan, was a DVD review of the Hong Kong actioner Gen-X Cops, starring Nicholas Tse and Daniel Wu.

我的第一篇文章为屏幕力量杂志，在对这天是Jackie Chan 正式杂志，是香港actioner Gen X 警察的DVD 回顾，担任主角Nicholas Tse 和丹尼尔吴。

His lips grazed hirs, Now what are you going to do?

他的唇使吃草了 hirs，现在你将要做什麼？