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