摘要
为了研究采用He-Ne激光器光源的迈克耳孙干涉仪干涉条纹特性,利用等效光路的方法计算了相干光的光程差,理论分析了等倾干涉条纹的特点,研究发现干涉条纹偏心主要是由两反射镜不严格垂直或者激光束与扩束镜不严格垂直引起的.基于Matlab软件,编写了干涉仪的仿真程序MIGUI并与实验结果进行了对比,MIGUI不仅能够准确地模拟测量波长的实验过程,还能够方便地调节影响干涉条纹的5个参数,定量地研究条纹光强分布情况.最后,利用MIGUI研究了动镜及扩束镜位置对于干涉条纹的影响,发现动镜位置改变对条纹半径的影响远大于后者.
Equivalent optical path method is used to study the optical path difference, the characteristics of interference fringes of Michelson interferometer by using He-Ne laser source is also analyzed theoretically. It is found that off-center problem of the interference fringes is mainly caused by the no perpendicularity of the two mirrors or the laser and the beam expander. Based on the software of Matlab, a simulation program MIGUI for Michelson interferometer is designed. MIGUI can not only accurately simulate the process of wavelength measurement, but also simply adjust the five parameters affecting interference fringes and study the intensity distribution of fringes quantitatively. Finally, MIGUI is used to study the influence of the position of the moving mirror and the beam expander on the interference fringes. It is found that the change of the position of the moving mirror has a greater effect on the fringe radius than the latter.
作者
史少辉
封顺珍
牛萍
东艳晖
刘继宏
吴淑花
SHI Shao-hui;FENG Shun-zhen;NIU Ping;DONG Yan-hui;LIU Ji-hong;WU Shu-hua(Department of Physics,Shijiazhuang University,Shijiazhuang, Hebei 050035, China)
出处
《大学物理》
2019年第9期24-28,共5页
College Physics
基金
河北省高等学科科学技术研究项目(Z2017053)
河北省教育厅人文社会科学研究项目(GH172028)
石家庄学院博士科研启动基金(14BS005)
石家庄学院教学改革研究项目(JGXM-201623A)资助
石家庄市科技局项目(19K57635D)
关键词
迈克耳孙干涉仪
MATLAB仿真
非定域干涉
等倾干涉
Michelson interferometer
Matlab simulation
non-localized interference
equal inclination interference
