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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 17 — Jun. 10, 2006
  • pp: 4084–4091

Absolute distance measurement with heterodyne optical feedback on a Yb:Er glass laser

Luc Kervevan, Hervé Gilles, Sylvain Girard, Mathieu Laroche, and Yves Monfort  »View Author Affiliations


Applied Optics, Vol. 45, Issue 17, pp. 4084-4091 (2006)
http://dx.doi.org/10.1364/AO.45.004084


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Abstract

Absolute distance measurement based on optical feedback using a single-frequency Yb:Er glass laser is demonstrated via the combination of heterodyne detection and frequency sweep. The technique allows for the enhancement of the sensitivity of the laser response to self-mixing thanks to resonant excitation close to the relaxation-oscillation frequency peak. The experimental results on noncooperative targets are in good agreement with the theory, and the shape of the resulting signal is analyzed in both the temporal and the frequency domains considering the specific dynamic of the class B solid-state laser. Suggestions are provided for further improvements on the signal processing.

© 2006 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(150.5670) Machine vision : Range finding
(290.1350) Scattering : Backscattering

History
Original Manuscript: July 25, 2005
Revised Manuscript: November 16, 2005
Manuscript Accepted: January 6, 2006

Citation
Luc Kervevan, Hervé Gilles, Sylvain Girard, Mathieu Laroche, and Yves Monfort, "Absolute distance measurement with heterodyne optical feedback on a Yb:Er glass laser," Appl. Opt. 45, 4084-4091 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-17-4084

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