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Optical Engineering

LabVIEW-based laser frequency stabilization system with phase-sensitive detection servo loop for Doppler LIDAR applications
Author(s): John A. Smith; Xinzhao Chu; Wentao Huang; Arne Johannes Wiig; Archie Brown
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Paper Abstract

Resonance fluorescence Doppler lidars using Doppler shift and spectral broadening effects are the principal instruments to simultaneously measure wind and temperature in the middle atmosphere. Such lidars demand high accuracy, precision, and stability of the laser optical frequency. Current resonance Doppler lidars suffer various problems in frequency stabilization that limit their locking precision and stability. We have addressed these problems by developing a LabVIEW®-based laser frequency locking system. This new system utilizes wavelength-modulation and phase-sensitive-detection techniques in conjunction with a proportional-integral-derivative feedback servo loop. It achieves better than ±1-MHz locking precision and stability over 1 h. The system also remains locked throughout a series of abrupt disturbance tests. Owing to its high locking precision, immunity to electronic and laser noise, reliability, and flexibility in adapting for various systems, we believe that this new system represents a marked improvement in resonance Doppler lidar technology.

Paper Details

Date Published: 1 November 2008
PDF: 9 pages
Opt. Eng. 47(11) 114201 doi: 10.1117/1.3013257
Published in: Optical Engineering Volume 47, Issue 11
Show Author Affiliations
John A. Smith, Cooperative Inst. for Research in Environment Sci (United States)
Xinzhao Chu, Cooperative Inst. for Research in Environment Sci (United States)
Wentao Huang, Cooperative Inst. for Research in Environment Sci (United States)
Arne Johannes Wiig, Univ. of Colorado at Boulder (United States)
Archie Brown, Triad Technology Inc. (United States)

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