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25 September 1997 FMCW technique using self-mixing inside a LiTaO3-Nd:YAG microchip laser for absolute distance and velocity measurements
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Proceedings Volume 3100, Sensors, Sensor Systems, and Sensor Data Processing; (1997) https://doi.org/10.1117/12.287741
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany
Abstract
In this paper a theoretical and an experimental study of a sensor which uses a self-mixing interference effect inside a microchip laser are reported. The so-called FMCW approach has been implemented by using a intracavity electrooptic modulator which provides a total 10 GHz frequency-shift of the optical wave emitted by a Nd3+:YAG-LiTaO3 microchip laser. We demonstrated that the resonant behavior of the microchip laser provides a substantial amplification of the return wave and that such a phenomenon can be used to perform a highly sensitive detection for absolute distance (from 1 to 20 m +/- 0.1%) and velocity (from 0.1 to 25 m.s-1 +/- 0.1%) measurements of a remote scattering target.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Philippe Nerin, Pierre Labeye, P. Bezesty, Pierre Puget, Germain H. Chartier, and M. Bergeon "FMCW technique using self-mixing inside a LiTaO3-Nd:YAG microchip laser for absolute distance and velocity measurements", Proc. SPIE 3100, Sensors, Sensor Systems, and Sensor Data Processing, (25 September 1997); https://doi.org/10.1117/12.287741
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