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Proceedings Paper

Absolute distance measurement using heterodyne optical feedback on Yb:Er glass laser
Author(s): Luc Kervevan; Hervé Gilles; Sylvain Girard; Mathieu Laroche
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Paper Abstract

Absolute distance measurement using optical feedback with heterodyne detection has been demonstrated by sweeping the optical frequency of a single longitudinal mode (SLM) Yb:Er glass laser. This technique allows enhancing the sensitivity of the laser response to self-mixing thanks to resonant excitation close to the relaxation oscillation frequency peak. The experimental results on a non-cooperative target are in good agreement with the theory. The shape of the resulting signal is analysed both in the temporal and frequency domains considering the specific dynamic of a class B solid-state laser.

Paper Details

Date Published: 22 April 2006
PDF: 9 pages
Proc. SPIE 6189, Optical Sensing II, 61891D (22 April 2006); doi: 10.1117/12.662052
Show Author Affiliations
Luc Kervevan, CIRIL, CNRS-CEA-ENSICAEN (France)
Hervé Gilles, CIRIL, CNRS-CEA-ENSICAEN (France)
Sylvain Girard, CIRIL, CNRS-CEA-ENSICAEN (France)
Mathieu Laroche, CIRIL, CNRS-CEA-ENSICAEN (France)

Published in SPIE Proceedings Vol. 6189:
Optical Sensing II
Brian Culshaw; Anna G. Mignani; Hartmut Bartelt; Leszek R. Jaroszewicz, Editor(s)

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