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

Luc Kervevan; Hervé Gilles; Sylvain Girard; Mathieu Laroche

doi:10.1117/12.662052

22 April 2006 Absolute distance measurement using heterodyne optical feedback on Yb:Er glass laser

Luc Kervevan, Hervé Gilles, Sylvain Girard, Mathieu Laroche

Proceedings Volume 6189, Optical Sensing II; 61891D (2006) https://doi.org/10.1117/12.662052
Event: SPIE Photonics Europe, 2006, Strasbourg, France

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.

Citation Download Citation

Luc Kervevan, Hervé Gilles, Sylvain Girard, and Mathieu Laroche "Absolute distance measurement using heterodyne optical feedback on Yb:Er glass laser", Proc. SPIE 6189, Optical Sensing II, 61891D (22 April 2006); https://doi.org/10.1117/12.662052

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