边发射半导体激光器自混合测速仪研究

J4 ›› 2010, Vol. 27 ›› Issue (5): 602-606.

边发射半导体激光器自混合测速仪研究

吕亮, 戴绩俊, 朱军, 甄胜来, 郝文良, 俞本利

安徽大学光电信息获取与控制教育部重点实验室，安徽合肥 230039

收稿日期:2010-01-04 修回日期:2010-03-08 出版日期:2010-09-28 发布日期:2010-08-31
通讯作者: 吕亮(1978-)，男，汉族，安徽省合肥市人，博士后，主要研究方向是光纤传感和光电技术研究。 E-mail: lianglu78@gmail.com
基金资助:
安徽省教育厅重点科研计划项目KJ2010A019，KJ2009A68资助

Study of self-mixing velocimeter using a edge emitting laser

LU Liang, DAI Jijun, ZHU Jun, ZHEN Shenglai, HAO Wenliang, YU Benli

Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Heifei 230039, China

Received:2010-01-04 Revised:2010-03-08 Published:2010-09-28 Online:2010-08-31

摘要/Abstract

摘要：

采用边发射半导体激光器作为激光自混合速度测量系统的激光光源，针对不同表面类型、采样时间、注入电流、信号处理系统对自混合测速结果的影响进行实验研究和讨论分析。结果表明不同反馈表明和采样时间（0.1S,1S）均能满足高精度测速要求。同时，实验中采用合适的激光工作电流（激光器阈值电流1.1倍以上）并结合零点控制技术能够获得信噪比更大激光自混合测速信号。这些结论对深入分析自混合信号的产生机理以及半导体激光自混合测量系统的优化具有参考意义。

关键词: 光学测量, 边发射半导体射激光器, 自混合, 速度测量仪

Abstract:

Self-mixing interference produced by the feedback of light from a moved target into an Edge Emitting Laser (EEL) was experimentally investigated for sensing applications. The self-mixing velocimeter with different types of surface，values of sample time and injection current, signal process system were also discussed. Results indicate that high precision requirement can be reached with different types of surface，values of sample time (0.1S,1S). Combined the experimental results of the self-mixing velocity measurement system, selecting proper injection current(above 1.1 times of threshold current) of EEL and null control technique can enhance Signal to Noise Ratio(SNR) of self-mixing signal. This conclusion can help us to improve the mechanism study and optimize the self-mixing vibration measurement system.

Key words: optical measurement, edge emitting laser, self-mixing, velocimeter

吕亮戴绩俊朱军甄胜来郝文良俞本利. 边发射半导体激光器自混合测速仪研究[J]. J4, 2010, 27(5): 602-606.

LU Liang, DAI Jijun, ZHU Jun, ZHEN Shenglai, HAO Wenliang, YU Benli . Study of self-mixing velocimeter using a edge emitting laser[J]. J4, 2010, 27(5): 602-606.

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