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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Jospeh N. Mait
  • Vol. 48, Iss. 3 — Jan. 20, 2009
  • pp: 609–616

Three-channel three-dimensional self-mixing thin-slice solid-state laser-Doppler measurements

Takayuki Ohtomo, Seiichi Sudo, and Kenju Otsuka  »View Author Affiliations


Applied Optics, Vol. 48, Issue 3, pp. 609-616 (2009)
http://dx.doi.org/10.1364/AO.48.000609


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Abstract

We report successful real-time three-channel self-mixing laser-Doppler measurements with extreme optical sensitivity using a laser-diode-pumped thin-slice Nd : Gd V O 4 laser in the carrier-frequency- division-multiplexing scheme with three pairs of acoustic optical modulators (i.e., frequency shifters) and a three-channel FM-wave demodulation circuit. We demonstrate (1) simultaneous independent measurement of three different nanometer-vibrating targets, (2) simultaneous measurements of small particles in Brownian motion from three directions, and (3) identification of the velocity vector of small particles moving in water flowing in a small-diameter glass pipe.

© 2009 Optical Society of America

OCIS Codes
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(290.7050) Scattering : Turbid media

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 22, 2008
Revised Manuscript: December 15, 2008
Manuscript Accepted: December 19, 2008
Published: January 16, 2009

Citation
Takayuki Ohtomo, Seiichi Sudo, and Kenju Otsuka, "Three-channel three-dimensional self-mixing thin-slice solid-state laser-Doppler measurements," Appl. Opt. 48, 609-616 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-3-609

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