Traditional optical disc recording technology has limited storage density and low information transfer rate due to laser diffraction spot size limitation ( micron order of magnitude). A new type of 3-D storage technology is proposed in thesis.

Primary parameters and living examples are given to show how to determine the parameter of optical system and make diffraction spot radius match detector size in laser heterodyne detecting system with both receiver and transmitter.

着重介绍了在收发合置式激光外差探测系统中，如何确定光学系统的参数，使成像的衍射斑与探测器尺寸匹配，并符合天线定理给出的条件，满足探测器混频的要求。

An Imaging Processing Method for Measuring the Array Position of Diffraction Spot of High Power Laser Beam

测量高功率激光束衍射光斑阵列位置的图象处理方法

Analysis of Electron Diffraction Spot Patterns by Using Microcomputer

电子衍射花样的微型机分析

This paper describes two microcomputer programs of electron diffraction spot patterns.

本文介绍了两种电子衍射花样的微型机分析程序。

We analyse the correlation image, present the way that removes liquid crystal diffraction spot, direct current spot and image noise, and binarize the correlation image finally.

提出了消除液晶衍射光斑、直流光斑和图像噪声的方法；最后对相关峰图像进行了二值化处理。

Then the diffraction spot size is decreased, and the optical resolution is increased, so the accuracy of the fine tracking system is improved.

由此减小接收衍射光斑的大小，提高系统的光学分辨能力，从而提高精跟踪系统的精确性。

The broadening of diffraction line is called broadening effect.

这种使衍射峰变宽的现象被称为超微粒子的（？）

Pt-particle size was determined by three methods: Xray Diffraction Line Broadening, Transmission Electron Microscope and Hydrogen Chemisorption. The dispersion of Pt in NaY zeolite and the effect of Pt particle size on hydrogen spill-over were also discussed.

用X&射线衍射峰宽化法、透射电子显微镜和氢化学吸附三种方法测定了Pt粒大小，讨论了Pt在NaY中的分散性及三种测定分散度方法的特点。

Based on GTD, this paper presents accurate tracing equations for the diffraction ray on the cone and cylinder which are suitable for both the far field and the near field and more accurate than those in the literature published in recent years.

基于几何绕射理论研究了圆锥体以及圆柱体上精确的绕射线寻迹方程，所得公式在射线寻迹上适用于远场与近场，比目前文献提及的方法更精确。

Simulation for Etching Diffraction Grating by Use of Scalar Diffraction Theory

标量衍射理论模拟蚀刻衍射光栅

Two Different Optical Arrangement for Making Plane Holographic Diffraction Grating

制作全息平面衍射光栅的两种光路

Analyzing the Characteristics and Better Utilization of Micro Programmable Diffraction Grating

微型可编程衍射光栅的特性分析

Calculation Methods for the SNR of Diffraction Grating Efficiency Measurement System

红外光栅衍射效率测量系统信噪比计算方法的研究

Mitigation of GPS Signal Diffraction Effect for Deformation Applications Based on Environment Modelling

变形监测中GPS信号衍射误差的环境建模法

An Analysis on Diffraction Effect and Calculation of SAW Transverse Filter

声表面波横向滤波器的衍射计算及衍射效应的分析

Change of Polarization of Vortex Beams Induced by Diffraction Effect

衍射效应诱导涡旋光束的偏振度变化

Diffraction effect is one of the main factors affecting the properties of SAW filters.

衍射效应常常是影响SAW滤波器特性的重要因素之一。

Fatigue Damage Detection by Laser Diffraction Spectrum Intensity Ratio

疲劳损伤的激光衍射谱面光强检测方法研究

Damage Variable Defined by Intensity Ratio of Laser Diffraction Spectrum

用激光衍射谱谱面光强比定义损伤变量D（K）的研究

Measuring Plastic Deformation on Metal Surface Through Laser Diffraction Spectrum

激光衍射谱测量金属塑性变形的方法研究