四波剪切波长探测实验研究

摘要本文围绕激光波前检测方法开展研究，为了解决传统横向剪切干涉仪难以做到同时采集两幅正交方向干涉图来恢复波面的困难，采用了一种四波横向剪切的方法。分析了四波剪切干涉的理论模型以及从单帧剪切干涉图中得到两个正交方向剪切波面的方法。分别介绍了普通正交光栅四波剪切方案和一种改进的棋盘光栅四波剪切方案。使用普通正交光栅做了一次探索性的四波剪切干涉实验，采集到了一些典型情况下的四波剪切干涉图，并选取其中一幅较好的干涉图，做了剪切波面恢复处理。64892

毕业论文关键词波面测量剪切干涉正交光栅棋盘光栅

毕业设计说明书（论文）外文摘要

Title Experiment for wave-front detection of four-wave shear

Abstract

In this paper, in order to solve the problem that the traditional lateral shear interferometer cannot do simultaneous acquisition of interferograms in two orthogonal directions to restore the wavefront ,we carries out research around the laser wavefront detection using a method of the four wave of transverse shear .we analysis the theoretical model of four wave shearing interferometer and the method of getting interference diagrams in two orthogonal shear directions from the single frame shear diagram. The general orthogonal grating four wave shear scheme and an improved chessboard grating four wave shear scheme is introduced .we make an exploration of four wave shearing interference experiment with the use of ordinary orthogonal grating, select a better interference graph in some four wave shear interferograms in some typical cases, recovery processing of the shearing wavefront is made.

Keywords wavefront measurement Shearing Interferometry Orthogonal grating，Checkerboard grating

1 引言 1

1.1 论文研究背景 1

1.2 波前检测的方法及各方法的利弊 1

1.2.1 哈特曼检验法 1

1.2.2夏克-哈特曼检验法 2

1.2.3剪切干涉法 3

1.3 论文主要研究内容和工作 4

2 四波横向剪切干涉技术 6

2.1 四波横向剪切干涉的理论模型 6

2.2 四波横向剪切干涉的实现技术 8

2.3 本章小结 12

3 四波剪切波前检测实验 13

3.1总体实验方案 13

3.1.1实验光路图 13

3.1.2实验参数方案 13

3.2 实验系统介绍 17

3.2.1实验光路图片 17

3.2.2实验器件介绍 17

3.3 实验结果与分析 18

3.4 本章小结 21

4 结论 22

4.1 全文总结 22

4.2 有待解决的问题 22

致谢 23

参考文献四波剪切波长探测实验研究:http://www.751com.cn/tongxin/lunwen_72293.html