光子学报, 2013, 42 (3): 373, 网络出版: 2013-03-05
利用法拉第效应进行永磁体磁场二维光学成像
2D Optical Imaging of Magnetic Field for Permanent Magnets by Faraday Effect
摘要
借助于法拉第磁致旋光效应, 以ZF6玻璃为磁旋光介质, 设计了适当的光学系统, 对永磁体磁极附近磁场的分布进行了光学二维成像.利用自编的图像采集软件采集了一系列原始图片, 并利用自编的图像处理软件对这些原始图片进行了处理, 完成了检偏过程.分别得到了透射成像方式和反射成像方式下永磁体磁场的分布图像, 这些图像正确反映了永磁体磁场的实际分布.本研究工作为宏观尺度磁场的观测与测量提供了一种有效的手段.
Abstract
Based on the Faraday magneto-optical effect, 2D optical imaging of magnetic field of the permanent magnets is carried out using an applicable optical system with the ZF6 glass as the magneto-optic medium. Original pictures are acquired using a self-programmed software, and processed using a self-programmed image processing software, thus polarization analysis is completed. The permanent magnet field distribution images are obtained under the transmission imaging and the reflection imaging respectively. These images reflect the actual magnetic field distribution. This experiment provides an effective means for observation and measurement of macroscopic magnetic field.
李淑慧, 李小俊, 郭慧爽. 利用法拉第效应进行永磁体磁场二维光学成像[J]. 光子学报, 2013, 42(3): 373. LI Shu-hui, LI Xiao-jun, GUO Hui-shuang. 2D Optical Imaging of Magnetic Field for Permanent Magnets by Faraday Effect[J]. ACTA PHOTONICA SINICA, 2013, 42(3): 373.