The Azimuth Angle and the Phase Retardations of a Compensator measured by Polarimeter

• Main Authors: Chen-Sheng Hung, 洪振盛
• Other Authors: Yu-Faye Chao
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/47116868826522800174

碩士 === 國立交通大學 === 光電(科學)研究所 === 83 === For establishing an accurate ellipsometer system in the laboratory, it is essential to calibrate each element of the system. A simple polarimetric technique is developed in this experiment to measure the optical axis and the phase retardation of a quarter-wave plate. By three intensities measured in PA (Polarizer-Analyzer) system with Analyzer at 0, 60, and 120 degree, and another three intensities measured in PCA (Polarizer Compensator-Analyzer) system with Analyzer at 0, 60, and 120 degree, we can calculate the azimuth angle and the phase retardation of the compensator. We find the compensator''s optical activity and its optical axis precisely when using the He-Ne Laser source first. Then we use a Tungsten-Halogen source which produces 632.8nm, 543.5nm, and 488nm light by three different filters to investigate the performances of this 632.8nm quarter-wave plate (compensator) under different wavelength of light.