| A SENSITIVE AND STABLE CONFOCAL FABRY－PéROT INTERFEROMETER FOR SURFACE ULTRASONIC VIBRATION DETECTION |
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| 引用本文： | 丁红胜,童莉葛,陈赓华.A SENSITIVE AND STABLE CONFOCAL FABRY－PéROT INTERFEROMETER FOR SURFACE ULTRASONIC VIBRATION DETECTION[J].中国物理 B,2001,10(8):730-734. |
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| 作者姓名： | 丁红胜 童莉葛 陈赓华 |
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| 作者单位： | (1)Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2)Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Physics, University of Science and Technology, Beijing 100083, China; (3)Mechanical Engineering School, University of Science and Technology, Beijing 100083, China |
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| 基金项目： | Project supported in part by the Ministry of Science and Technology of China (NKBRSF-G 19990646). |
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| 摘 要： | A new confocal Fabry－Pérot interferometer (CFPI) has been constructed. By using both of the conjugate rays, the sensitivity of the system was doubled. Moreover, the negative feedback control loop of a single-chip microcomputer (MCS-51) was applied to stabilize the working point at an optimum position. The system has been used in detecting the piezoelectric ultrasonic vibration on the surface of an aluminium sample.
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| 关 键 词： | confocal Fabry－Pérot interferometer ultrasonic detection sensitivity stability |
| 收稿时间： | 3/2/2001 12:00:00 AM |
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