高阶彩虹现象的观测及其色散特性研究  

Observation of higher-order rainbow and research of its dispersion characteristics

作　　者：刘涵 李咏璇 区艺锋 颜秉琪 苏琪淇 彭力[1,2] LIU Han;LI Yong-xuan;OU Yi-feng;YAN Bing-qi;SU Qi-qi;PENG Li(College of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China;SCNU Qingyuan Institute of Science and Technology Innovation Co.Ltd.,Qingyuan 511517,China)

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006 [2]华南师大(清远)科技创新研究院有限公司,广东清远511517

出　　处：《物理实验》2022年第8期14-19,27,共7页Physics Experimentation

基　　金：国家自然科学基金项目(No.61975058)。

摘　　要：最小偏向角是研究高阶彩虹现象的重要特征参量.设计了基于环形光屏的高阶彩虹观测装置,能够观测到清晰的1~6阶虹,实现了虹与霓现象的复现,通过读取环形光屏上的角坐标即可测定高阶彩虹的最小偏向角.探讨了不同波长的激光入射时,虹与霓的偏向角随入射角的变化,进一步解释了彩虹的色散规律.根据角坐标的测量值可以推导出圆柱介质的折射率.The angle of minimum deviation is an important characteristic parameter to study the phenomenon of high-order rainbow.In this paper,a high-order rainbow observation device based on the annular light screen was designed,which could observe clearly the high-order rainbow from 1st to6th order and realize the reproduction of the rainbow and neon.The angle of minimum deviation of the high-order rainbow was determined by reading the angular coordinates on the annular light screen.In addition,the relationship between the deviation angle of rainbow and neon and the incident angle was discussed when the laser of different wavelengths was incident,and the law of rainbow dispersion was further explained afterwards.The refractive index of cylindrical media was derived from the angular coordinates.

关 键 词：虹 霓 高阶虹 最小偏向角 

分 类 号：O435.1[机械工程—光学工程] O436.3[理学—光学]