激光剪切干涉系统的设计与应用  

Design and application of laser shear interference system

作　　者：彭子明 吴义云 郑梦超 李国友 吴建光[1] 邹勇 PENG Ziming;WU Yiyun;ZHENG Mengchao;LI Guoyou;WU Jianguang;ZOU Yong(School of Microelectronics and Data Science,Anhui University of Technology,Maanshan,Anhui 243032,China;Nanjing Ningji Internet of Things Technology Co.LTD,Nanjing,Jiangsu 210031,China)

机构地区：[1]安徽工业大学微电子与数据科学学院,安徽马鞍山243032 [2]南京宁基物联网技术有限公司,江苏南京210031

出　　处：《光电子．激光》2023年第12期1249-1255,共7页Journal of Optoelectronics·Laser

基　　金：安徽高校自然科学基金重点项目(KJ2021A0388);安徽工业大学国家级大学生创新创业训练项目(202210360090,202210360084);安徽工业大学省级大学生创新创业训练项目(S202110360324)和安徽工业大学实验技术开发基金项目(10)资助项目。

摘　　要：针对以光相干为基础的无损、非接触测量研究,利用沃拉斯顿棱镜(Wollaston prism, WP)作为剪切元件,设计了共光路激光剪切干涉的方法并组建系统。本文详细分析了其各个部件对所得干涉条纹成像质量的影响,得到了获取最优干涉条纹所需要满足的一系列条件。随后利用组建的系统获得了透明方腔内流体在温度梯度作用下的对流涡胞结构以及温度分布情况,初步验证了该系统在此研究领域应用的可行性。在以上研究的基础上,配合图像处理及迭代算法技术,该系统在三维场的重建中有较大的应用前景。Aiming at the research of nondestructive and non-contact measurement based on optical coherence,the method of designing and constructing common optical path laser shear interference system is proposed using Wollaston prism(WP)as the shear component.In this paper,the effects of its components on the imaging quality of interference fringes are analyzed in detail,and a series of conditions to obtain the optimal interference fringe are acquired.Subsequently,the convective vortex cell structure and temperature distribution of the fluid in the transparent square cavity under the action of temperature gradient are obtained by using the constructed system,which preliminarily verifies the feasibility of the system in this research field.On the basis of the above research,combined with image processing and iterative algorithm technology,the system has a great application prospect in three-dimension field reconstruction.

关 键 词：干涉条纹 剪切干涉仪 沃拉斯顿棱镜(WP) 流场 温度场 

分 类 号：TN247[电子电信—物理电子学]