| 激光多普勒技术在固体测量方面的运用 |
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| 引用本文： | 邹泓.激光多普勒技术在固体测量方面的运用[J].光学技术,2000,26(2):101-103,106. |
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| 作者姓名： | 邹泓 |
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| 作者单位： | 清华大学精密测试技术与仪器国家重点实验室!北京100084 |
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| 摘 要： | 介绍了激光多普勒测量技术的原理和后散射型固体表面测量方式。通过声光调制器的偏频后 ,能够确定物体的运动方向。对多普勒信号进行光学外差处理并对多普勒信号进行测相 ,可以提高测量的精度。用差动微分多普勒技术进行测量 ,可以消除由固体表面特性和激光光强的波动引起的误差。
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| 关 键 词： | 激光多普勒测速计 自混频效应激光多普勒技术 |
Application of laser Doppler technique in solid surface measurement |
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| ZOU Hong,ZHAO Yang.Application of laser Doppler technique in solid surface measurement[J].Optical Technique,2000,26(2):101-103,106. |
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| Authors: | ZOU Hong ZHAO Yang |
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| Abstract: | The principle of Laser Doppler Velocity (LDV) and the method of back scattering are presented. The moving vector of object can be confirmed when the acoustic optic modulator (AOM) introduces a frequency offset. The accuracy can be enhanced with optical heterodyne technique and the phase measurement of Doppler signals. Using the differential Doppler technique, the error caused by solid surface configuration and laser intensity fluctuation can be eliminated. |
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| Keywords: | LDV self mixing effect |
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