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Optical Engineering

Dual-differential laser Doppler angular vibrometer using a ring laser
Author(s): Xin Zhang; Guangfeng Lu; Zhenfang Fan; Hui Luo
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Paper Abstract

A laser Doppler angular vibrometer using a He–Ne dual-frequency ring laser (DF-RL) is demonstrated. By detecting the interference signal of two beams which are diffracted by the surface of two gratings, the displacement of angular vibration can be measured. To our knowledge, this is the first time that a DF-RL has been utilized as the source of a Doppler angular vibrometer. It shows in theory and experiment that this dual-differential laser Doppler angular vibrometer possesses a high precision and can suppress the error in horizontal vibration at the same time, which can be applied to high-frequency microangular vibration measurement.

Paper Details

Date Published: 12 October 2016
PDF: 7 pages
Opt. Eng. 55(10) 106107 doi: 10.1117/1.OE.55.10.106107
Published in: Optical Engineering Volume 55, Issue 10
Show Author Affiliations
Xin Zhang, National Univ. of Defense Technology (China)
Guangfeng Lu, National Univ. of Defense Technology (China)
Zhenfang Fan, National Univ. of Defense Technology (China)
Hui Luo, National Univ. of Defense Technology (China)


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