【作者】 王中平； 张权； 朱玲； 张增明； 孙腊珍；

【Author】 WANG Zhong-ping,ZHANG Quan,ZHU Ling,ZHANG Zeng-ming,SUN La-zhen (Physics Experiment Teaching Center,School of Physics, University of Science and Technology of China,Hefei 230026,China)

【机构】 中国科学技术大学物理学院物理实验教学中心；

【摘要】 激光照射到粗糙物体的表面上在空间中随机相干叠加形成散斑。激光散斑随物体在自身平面内作同步运动,这一现象可用来测量物体的微小位移。本文利用氦氖激光器作为光源,结合CCD成像技术辅助采集散斑图像,采用计算机程序处理图像,验证散斑位移理论,并指出CCD成像辅助的激光散斑教学中应注意的问题。更多还原

【Abstract】 The laser speckles are randomly formed coherence stack in space when a laser beam is irradiated by rough surface of an object.The laser speckles move synchronism as the object moves in its plane,this phenomenon can be used to measure the small displacement of an object.In paper,He-Ne laser as optical source combined with CCD imaging technology to collect speckle images.The images deal with computer programme to verify the theory of the speckles displacement.The problem has been pointed out in teaching for CCD imaging assisted laser speckles experiments.更多还原