Two-Dimensional Velocity Measurements With Self-Mixing Technique in Diode-Pumped Yb : Er Glass Laser

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2004 English Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Photonics Technology Letters, volume 16, pages 1,709-1,711 (issn: 1041-1135,

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Authors: L. Kervevan; H. Gilles; S. Girard; M. Laroche;

doi: 10.1109/lpt.2004.828830

Two-Dimensional Velocity Measurements With Self-Mixing Technique in Diode-Pumped Yb : Er Glass Laser

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Abstract

Self-mixing laser Doppler velocimeter based on a two beam geometry scheme is investigated using a single-frequency Yb:Er-doped phosphate glass laser. The geometry allows the observation of a beat mode with optical crosstalk between the two optical paths, giving two major improvements: 1) a precise positioning of the optical head compared to the scattering target; 2) the measurement of both the absolute value of the velocity and the orientation of the speed.

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