| 单频激光干涉仪四通道信号接收系统 |
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| 引用本文： | 王力,侯文玫.单频激光干涉仪四通道信号接收系统[J].计量学报,2006,27(4):313-316. |
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| 作者姓名： | 王力 侯文玫 |
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| 作者单位： | 上海理工大学光电学院,上海,200093 |
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| 基金项目： | 上海市重点学科建设项目;上海市教委重点学科项目 |
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| 摘 要： | 在单频激光干涉仪四通道信号接收系统原理基础上，提出一种采用Wollaston棱镜的四通道信号接收系统。当使用偏振分光镜的四通道信号接收系统时，由于偏振混合现象，在信号接收的过程中会增加额外的误差。而Wollaston棱镜的自然物理特性提供了更好的分光性能，从而能降低偏振混合所带来的影响，提高了信号输出质量，并能简化接收系统中的光学元件。
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| 关 键 词： | 计量学 单频干涉仪 Wollaston棱镜 Koester棱镜 消光比 |
| 文章编号： | 1000-1158（2006）04-0313-04 |
| 收稿时间： | 2005-08-05 |
| 修稿时间： | 2006-02-28 |
A 4-channel Quadrature Detector System in Homodyne Interferometer |
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| WANG Li,HOU Wen-mei.A 4-channel Quadrature Detector System in Homodyne Interferometer[J].Acta Metrologica Sinica,2006,27(4):313-316. |
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| Authors: | WANG Li HOU Wen-mei |
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| Abstract: | Based on the principle of 4-channel quadrature detector system in homodyne interferometer,a kind of detector system consisting of Wollaston prism is introduced.Due to polarization mixing when polarizing beam splitters(PBS) are employed in 4-channel quadrature detector system the extra error increases in the measurement.However,the natural characteristic of Wollaston prism provides higher polarizing performance so that this kind of detector system will reduce the error introduced by polarization mixing in detecting process,improve the quality of detected signal and simplify some optical components compared to the detector system with PBS. |
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| Keywords: | Metrology Homodyne interferometer Wollaston prism Koester prism Extinction ratio |
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