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Proceedings Paper

Effect of speckle pattern on laser Doppler velocimeters by varying angle between the laser beam direction and the velocity
Author(s): Liang Lu; Jijun Dai
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Paper Abstract

This paper presents a theoretical analysis speckle effect and a comparison with experiment results on laser Doppler velocimeters at different velocity. We have found that the value of ratio between broadening of frequency and center frequency is about 30% from 32.2mm/s to 379.6mm/s and effect of speckle pattern is one of the prime reasons. The error caused by effect of speckle pattern is an intolerant value in velocity measurements.

Paper Details

Date Published: 24 November 2009
PDF: 8 pages
Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090O (24 November 2009); doi: 10.1117/12.836967
Show Author Affiliations
Liang Lu, Anhui Univ. (China)
Jijun Dai, Anhui Univ. (China)


Published in SPIE Proceedings Vol. 7509:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration
Xuping Zhang; Wojtek J. Bock; Xuejun Lu; Hai Ming, Editor(s)

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