Determination of Verdet Constant for Solids with Optical Heterodyne Interferometer

• Main Authors: Hun-Sum Huang, 黃鴻盛
• Other Authors: Jin-Gor Chang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/38687826896455523684

碩士 === 逢甲大學 === 光電物理研究所 === 93 === Abstract We take advantage of optical heterodyne method to measure the Verdet constant for the solid materials. The setup of this experiment base on a Mach-Zender interferometer combining with a differential amplifier or a lock-in amplifier. In this experiment we used a polarizer optical heterodyne and balance detection to measure the Verdet constant of Faraday effect. Compare with traditional method，we can reduce error which come from systematic arrangement and mechanical vibration. According to the balance detection，signal and reference beam come from the same source，the small vibration are nearly the same. Both differential amplifier and lock-in amplifier have been used to improve sensitivity. In addition，we used digital multi-meter and PC as well as LabView program and GBIB system to measure data in real time. In this experiment，we measure solids Verdet constant for solid including BSO，BK7，Fused Silica、MR1、MR3-2 and MR4 .