Lasers, Fiber Optics, and Communications

Dual-differential laser Doppler angular vibrometer using a ring laser

[+] Author Affiliations
Xin Zhang, Guangfeng Lu, Zhenfang Fan, Hui Luo

National University of Defense Technology, College of Optoelectronic Science and Engineering, DeYa Road 109, Changsha, Hunan Province 410073, China

National University of Defense Technology, Department of Laser Gyro, DeYa Road 109, Changsha, Hunan 410073, China

Opt. Eng. 55(10), 106107 (Oct 12, 2016). doi:10.1117/1.OE.55.10.106107
History: Received July 17, 2016; Accepted September 15, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Xin Zhang ; Guangfeng Lu ; Zhenfang Fan and Hui Luo
"Dual-differential laser Doppler angular vibrometer using a ring laser", Opt. Eng. 55(10), 106107 (Oct 12, 2016). ; http://dx.doi.org/10.1117/1.OE.55.10.106107


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