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Optical Engineering

Four-beam two-focus differential laser velocimetry system
Author(s): Chunyong Yin; Jihua Guo; Zhengqi Xu; Yunfeng Song
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Paper Abstract

A four-beam two-focus differential laser velocimetry system with an acousto-optic modulator, which is suitable for measuring solid deformation or movement at ultralow speed, is presented. The signal-to-noise ratio is good enough for phase discrimination, the frequency response range is 0 to 20 kHz, and the measurable velocity range is 0.001 m/s to 300 mm/s.

Paper Details

Date Published: 1 August 1992
PDF: 4 pages
Opt. Eng. 31(8) doi: 10.1117/12.58727
Published in: Optical Engineering Volume 31, Issue 8
Show Author Affiliations
Chunyong Yin, Tsinghua Univ. (China)
Jihua Guo, Tsinghua University (China)
Zhengqi Xu, Tsinghua University (China)
Yunfeng Song, Tsinghua University (China)

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