| 微振动振幅的精密测量 |
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| 引用本文： | 汤俊雄,万炼.微振动振幅的精密测量[J].光学学报,1989,9(12):092-1097. |
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| 作者姓名： | 汤俊雄 万炼 |
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| 作者单位： | 北京大学无线电电子学系
(汤俊雄，万炼，吴义芳，施清)，北京大学无线电电子学系(郑乐民) |
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| 摘 要： | 本文给出一种微振动振幅的精密测量方法.此方法采用光拍相位检测、伺服锁定干涉仪光程差和窄带检测技术,大大提高了信噪比.微振动振幅检测灵敏度达2.2×10~(-2)(?)/Hz~(1/2)(2kHz信号).
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| 关 键 词： | 光拍相位检测 振幅 伺服锁定 振动 |
| 收稿时间： | 1998/9/9 |
Precise measurement of micro-vibration amplitude |
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| TANG JUNXIONG,WAN LIAN,WU YIFANG,SHI QING,AND ZHENG LEMIN.Precise measurement of micro-vibration amplitude[J].Acta Optica Sinica,1989,9(12):092-1097. |
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| Authors: | TANG JUNXIONG WAN LIAN WU YIFANG SHI QING AND ZHENG LEMIN |
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| Abstract: | A precise measuring method of micro-vibration amplitude is reported. Optical heterodyne phase detecting technique, servo looking for the optical path difference of interferometer and narrow band detecting technique are used. The signal to noise ratio is improved greatly. The sensitivity of amplitude measuring can reach 2.2×10-2 A/ (2 kHz signal). |
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| Keywords: | optical heterodyne phase detection narrow band detection servo looking |
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