Title :
Two-dimensional velocity measurements With self-mixing technique in diode-pumped Yb:Er glass laser
Author :
Kervevan, Luc ; Gilles, Hervé ; Girard, Sylvain ; Laroche, Mathieu
Author_Institution :
Centre Interdisciplinaire de Recherche Ions Lasers, Caen, France
fDate :
7/1/2004 12:00:00 AM
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.
Keywords :
erbium; laser frequency stability; laser velocimeters; laser velocimetry; optical crosstalk; optical feedback; optical pumping; optical sensors; solid lasers; velocity measurement; ytterbium; Doppler velocimeter; Yb:Er phosphate glass laser; beat mode; optical crosstalk; optical pumping; self-mixing; single frequency glass laser; velocity measurements; Diodes; Glass; Laser modes; Microchip lasers; Optical feedback; Optical sensors; Solid lasers; Surface emitting lasers; Velocity measurement; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.828830
