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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 18 — Jun. 20, 2001
  • pp: 3076–3081

Reference-Beam Storage for Long-Range Low-Coherence Pulsed Doppler Lidar

Adrian A. Dorrington, Rainer Kunnemeyer, and Paul M. Danehy  »View Author Affiliations


Applied Optics, Vol. 40, Issue 18, pp. 3076-3081 (2001)
http://dx.doi.org/10.1364/AO.40.003076


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Abstract

We present a laser Doppler velocimeter that stores and delays the reference beam to preserve coherence with a long-path-length measurement beam. Our storage and delay technique relaxes the strict coherence requirements associated with lidar laser sources, permitting the use of low-coherence lasers. This technique potentially could reduce the cost and size of lidar systems for commercial applications. Experiments that use fiber-optic ring resonators to store the reference beams and generate reference pulse trains validated the concept. We obtained results at several simulated distances by beating each usable reference pulse with a delayed Doppler-shifted measurement beam reflected off a rotating mirror.

© 2001 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(230.5750) Optical devices : Resonators
(280.3640) Remote sensing and sensors : Lidar

Citation
Adrian A. Dorrington, Rainer Kunnemeyer, and Paul M. Danehy, "Reference-Beam Storage for Long-Range Low-Coherence Pulsed Doppler Lidar," Appl. Opt. 40, 3076-3081 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-18-3076

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