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Optical Engineering

Study of speckle pattern effect for self-mixing laser diodes in vertical-cavity surface-emitting lasers
Author(s): Liang Lu; Ke Zhang; Jijun Dai; Jun Zhu; Shenglai Zhen; Benli Yu
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Paper Abstract

We present a theoretical analysis and a comparison to experimental results on self-mixing interference. From the theoretical analysis and experiment, the error of the velocity measurement, which is caused by a speckle pattern, has been investigated and optimization of the laser diode velocity system by selecting suitable experiment parameters and proper signal processing methods has been reported. The actual measurement error is <3.1% over a wide velocity range (5.2-479 mm/s).

Paper Details

Date Published: 1 September 2010
PDF: 6 pages
Opt. Eng. 49(9) 094301 doi: 10.1117/1.3485755
Published in: Optical Engineering Volume 49, Issue 9
Show Author Affiliations
Liang Lu, Anhui Univ. (China)
Ke Zhang, Anhui Univ. (China)
Jijun Dai, Anhui Univ. (China)
Jun Zhu, Anhui Univ. (China)
Shenglai Zhen, Anhui Univ. (China)
Benli Yu, Anhui Univ. (China)

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