| 法拉第镜旋转角的偏振分束测量法 |
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| 引用本文： | 郝蕴琦,李海宁,杨坤,孔鹏,苏磊,李俊丰,陈镇平.法拉第镜旋转角的偏振分束测量法[J].应用光学,2009,30(4):626-630. |
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| 作者姓名： | 郝蕴琦 李海宁 杨坤 孔鹏 苏磊 李俊丰 陈镇平 |
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| 作者单位： | 1. 郑州轻工业学院技术,物理系,河南,郑州,450002
2. 西安应用光学研究所,陕西,西安,710065 |
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| 基金项目： | 郑州轻工业学院校内基金支持项目 |
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| 摘 要： | 提出了基于偏振分束法的法拉第镜偏振旋转角的测量方法.利用非偏振分束器改变法拉第镜出射光的方向,偏振分束器将该出射光分为p光和s光,分别测量其光强,应用后续"差除和"信号处理方案消除光源波动的影响,推导出法拉第镜偏振旋转角的理论表达式.分析了起偏器的消光比非0及起偏角误差对输出结果的影响,分别是0.057 29°和-0.100 0°.实验验证了该方法的可行性,重复测量结果为89.68°,均方值为0.014 93.
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| 关 键 词： | 法拉第镜 偏振旋转角 偏振分束法 |
| 收稿时间： | 2009/3/10 |
Polarization-beam-splitter measurement of rotary angle for Faraday mirror |
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| HAO Yun-qi,LI Hai-ning,YANG Kun,KONG Peng,SU Lei,LI Jun-feng,CHEN Zhen-ping.Polarization-beam-splitter measurement of rotary angle for Faraday mirror[J].Journal of Applied Optics,2009,30(4):626-630. |
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| Authors: | HAO Yun-qi LI Hai-ning YANG Kun KONG Peng SU Lei LI Jun-feng CHEN Zhen-ping |
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| Abstract: | The measurement of polarization rotary angle for faraday mirror based on polarization-beam-splitter was proposed. The orientation of the light from the faraday mirror was changed through a non-polarized beam splitter (NPBS). With a polarized beam splitter (PBS), the light reflected from NPBS was split into S light and P light. Their intensities were measured, and the theoretical expression of rotary angle was deduced after the impact of optical fluctuation is eliminated by signal processing. The influence of non-zero extinction ratio and polarized-angle error on output results was analyzed. Finally the intensities were repeatedly measured, and the average rotary angle was 89.68°, the mean square deviation of all the experimental data was 0.01493. |
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| Keywords: | Faraday mirror polarized rotary angle polarization-beam-splitter measurement |
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