综合实验试题D:基于迈克耳孙干涉仪的液晶光学和光场相干性实验  

Comprehensive problem D:Experiments on liquid crystal optics and light field coherence based on the Michelson interferometer

作　　者：陈科 王福娟[1,2] 王嘉辉 李佼洋[1,2] 蔡志岗 CHEN Ke;WANG Fujuan;WANG Jiahui;LI Jiaoyang;CAI Zhigang(School of Physics,,SUN Yat-sen University,Guangzhou 510275,China;b.National Demonstration Center for Experimental Physics Education(Sun Yat-sen University),SUN Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学物理学院,广东广州510275 [2]中山大学物理学国家级实验教学示范中心(中山大学),广东广州510275

出　　处：《物理实验》2024年第6期30-38,共9页Physics Experimentation

基　　金：中山大学高校基本业务费:青年教师培育项目(No.22hytd08);中山大学2023年度校级教学质量工程项目(教务[2023] 96号);中山大学2024年度校级教学质量工程项目(教务[2023]207号)

摘　　要：介绍了第9届全国大学生物理实验竞赛综合研究性实验试题D的命题设计和实验内容,并给出参考解答以及竞赛结果分析.综合实验试题D基于迈克耳孙干涉仪实验系统,测量液晶双折射率的光学属性和电光调制效应,测量LED光源的相干时间,探究如何改善光场的空间相干性.竞赛结果表明:大部分考生对教学大纲中涉及迈克耳孙干涉仪中的基本实验内容掌握较好,但对常规仪器设备的扩展使用和应用能力尚存在不足,开放性的自主设计和搭建实验光路对培养学生完成既定实验目标的能力仍有待提高.The design and experimental content of Comprehensive problem D at the 9th National College Physics Experiment Competition,as well the reference solutions and an analysis of the competition results were introduced.Based on the Michelson interferometer experimental system,Comprehensive problem D aimed to measure the optical properties of liquid crystal birefringence and the electro-optical modulation effect,the coherence time of LED light sources,and to explore ways to improve the spatial coherence of the light field.The competition results showed that while most participants had a good grasp of the basic experimental content involving the Michelson interferometer as covered in the teaching syllabus,there were still deficiencies in the extended use and application capabilities of conventional equipment.The ability to creatively design and set up experimental optical paths to achieve set experimental goals also needs further improvement.

关 键 词：迈克耳孙干涉仪 液晶 时间相干性 空间相干性 

分 类 号：O438[机械工程—光学工程]