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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 18 — Jun. 20, 2012
  • pp: 4021–4027

Dual-probe homodyne quadrature laser interferometer

Tomaž Požar and Janez Možina  »View Author Affiliations

Applied Optics, Vol. 51, Issue 18, pp. 4021-4027 (2012)

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We present a dual-probe homodyne quadrature laser interferometer for the measurements of displacement at two separate spatial locations. This is a coupled homodyne interferometer with inverted polarity of probe signals featuring a wide dynamic range and constant sensitivity. As an application of this dual-probe interferometer, we demonstrate how to locate the pulsed-laser interaction site on a plate without knowing the propagation velocities of the laser-induced mechanical waves.

© 2012 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(350.7420) Other areas of optics : Waves
(280.3375) Remote sensing and sensors : Laser induced ultrasonics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: November 15, 2011
Revised Manuscript: March 27, 2012
Manuscript Accepted: April 28, 2012
Published: June 12, 2012

Tomaž Požar and Janez Možina, "Dual-probe homodyne quadrature laser interferometer," Appl. Opt. 51, 4021-4027 (2012)

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