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Optical Engineering • Open Access

Laser diode self-mixing interferometry for velocity measurements
Author(s): Alexandra S. Alexandrova; Vasilis Tzoganis; Carsten P. Welsch

Paper Abstract

A diode laser velocimeter based on laser self-mixing has been developed and characterized as a reliable, precise, comparably cheap, and compact monitor. The resolution of this sensor at different incident angles and for a variety of solid and liquid targets moving at velocities between 0.1 and 50  m/s is presented. This includes a theoretical analysis of the underlying measurement principle, highlighting possibilities to extend the measurement capabilities to even higher velocities by altering the sensor design. Finally, an outlook on future applications of the sensor for detailed studies of supersonic gas jets used in beam diagnostics and atomic physics applications is given.

Paper Details

Date Published: 4 March 2015
PDF: 9 pages
Opt. Eng. 54(3) 034104 doi: 10.1117/1.OE.54.3.034104
Published in: Optical Engineering Volume 54, Issue 3
Show Author Affiliations
Alexandra S. Alexandrova, The Cockcroft Institute (United Kingdom)
Univ. of Liverpool (United Kingdom)
Vasilis Tzoganis, The Cockcroft Institute (United Kingdom)
Univ. of Liverpool (United Kingdom)
RIKEN Nishina Ctr. (Japan)
Carsten P. Welsch, The Cockcroft Institute (United Kingdom)
Univ. of Liverpool (United Kingdom)


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