全相位谱分析在自混合干涉位移测量中的应用

杨颖; 李醒飞; 寇科; 王错

doi:10.3788/OPE.20122008.1740

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全相位谱分析在自混合干涉位移测量中的应用

微纳技术与精密机械 | 更新时间：2020-08-12

- 全相位谱分析在自混合干涉位移测量中的应用
- Application of all-phase spectral analysis to self-mixing interferometry for displacement measurement
- 光学精密工程 2012年20卷第8期页码：1740-1746
- 作者机构：
  
  天津大学精密测试技术及仪器国家重点实验室,天津 300072
- 作者简介：
- 基金信息：
  
  高等学校博士学科点专项科研基金资助项目(No.20110032110052)();精密测试技术及仪器国家重点实验室开放基金资助项目(No.2006A10401006)()
- DOI：10.3788/OPE.20122008.1740
  中图分类号： TH822;TH744.3
- 收稿日期：2012-04-13，
  
  修回日期：2012-05-14，
  
  纸质出版日期：2012-08-10
- 稿件说明：
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杨颖, 李醒飞, 寇科, 王错. 全相位谱分析在自混合干涉位移测量中的应用[J]. 光学精密工程, 2012,(8): 1740-1746

YANG Ying, LI Xing-fei, KOU Ke, WANG Cuo. Application of all-phase spectral analysis to self-mixing interferometry for displacement measurement[J]. Editorial Office of Optics and Precision Engineering, 2012,(8): 1740-1746
杨颖, 李醒飞, 寇科, 王错. 全相位谱分析在自混合干涉位移测量中的应用[J]. 光学精密工程, 2012,(8): 1740-1746 DOI： 10.3788/OPE.20122008.1740.

YANG Ying, LI Xing-fei, KOU Ke, WANG Cuo. Application of all-phase spectral analysis to self-mixing interferometry for displacement measurement[J]. Editorial Office of Optics and Precision Engineering, 2012,(8): 1740-1746 DOI： 10.3788/OPE.20122008.1740.

摘要

提出基于全相位谱分析的自混合干涉信号处理方法

用于减小激光自混合干涉位移测量的误差。首先

基于三镜法布里-珀罗腔模型介绍了自混合干涉系统的数学模型

分析了自混合干涉信号的产生机理和特性。然后

研究了弱反馈条件下自混合干涉位移测量方法

采用全相位谱分析算法进行相位测量

重构外部反射体位移曲线;讨论了信号处理算法原理并进行了算法仿真。最后

进行自混合干涉位移测量实验

并给出压电陶瓷位移测量实验结果。结果表明

全相位谱分析算法可将自混合干涉位移测量误差减小到4.4 nm;应用全相位谱分析算法分析自混合干涉信号

可在不增加外部光学元件的前提下将位移测量误差减小到纳米量级。

Abstract

A signal processing technique based on all-phase spectral analysis was proposed to reduce the displacement measurement error of a self-mixing interferometer. Self-mixing interference principle and signal processing technique were analyzed. First

the mathematical model and signal characteristics for the self-mixing interferometer were presented based on the model of laser oscillation cavity with three mirrors. Then

the displacement principle based on self-mixing interference was introduced. A all-phase spectral analysis was used to extract the phase of self-mixing interference signal to reconstruct the displacement of a reflective target and the signal processing algorithm was investigated with arithmetic simulation. Finally

an experiment system was established and the calibration result of bimorph PZT was presented. Experimental results indicate that the displacement error can be decreased to 4.4 nm by using all-phase spectral analysis. It concludes that the all-phase spectral analysis can reduce the displacement error of the self-mixing interferometer to nanometer level without increasing the number of optical elements.

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Keywords

references

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