| 压电陶瓷压电特性的激光调制法测量研究 |
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| 引用本文： | 易迎彦,周泽兵. 压电陶瓷压电特性的激光调制法测量研究[J]. 应用光学, 2004, 25(3): 27-32 |
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| 作者姓名： | 易迎彦 周泽兵 |
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| 作者单位： | 华中科技大学,物理系,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金(基金号:10205005) |
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| 摘 要： | 介绍可测量压电陶瓷压电特性的激光干涉调制测量方法.采用相干检测原理对信号进行提取,不仅可以抑制噪声对干涉信号的影响,而且还可以大大降低光电探测器和电路的1/f噪声.与通常干涉仪测量方法相比,这种方法具有测量灵敏度高等优点.利用该方法对压电陶瓷压电特性进行了测量,讨论了激励电压信号的频率、幅度对压电陶瓷压电常数d31的影响,并对其压电迟滞曲线进行了测量.
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| 关 键 词： | 激光干涉 调制检测 压电陶瓷 压电特性 |
| 文章编号： | 1002-2082(2004)03-0027-06 |
| 收稿时间： | 2003-01-27 |
Study of Modulated Laser Interferometry for Piezoelectric Characteristic Measurement of Piezoelectric Ceramic |
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| YI Ying-yan,ZHOU Ze-bing. Study of Modulated Laser Interferometry for Piezoelectric Characteristic Measurement of Piezoelectric Ceramic[J]. Journal of Applied Optics, 2004, 25(3): 27-32 |
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| Authors: | YI Ying-yan ZHOU Ze-bing |
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| Affiliation: | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | A modulated laser interferometer used for piezoelectric characteristic measurement of the piezoelectric ceramic is discussed. By this method, it can not only suppress the effect of noises on the interference signal, but also adequately reduce the effect of so called 1/f noise of the photo-detector and electric elements. Compared with general interferometric method, the modulation interferometry has an advantage of high precision. Finally, the piezoelectric constant d (31) of a piezoelectric ceramic versus the frequency and amplitude of the excited voltages,and the hysteresis loop of the material are measured with this method. |
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| Keywords: | laser interferometry modulation measurement piezoelectric ceramic piezoelectric characteristic |
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