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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 9 — Mar. 20, 2009
  • pp: 1784–1789

Simultaneous measurement of linear and transverse displacements by laser self-mixing

Simona Ottonelli, Maurizio Dabbicco, Francesco De Lucia, and Gaetano Scamarcio  »View Author Affiliations


Applied Optics, Vol. 48, Issue 9, pp. 1784-1789 (2009)
http://dx.doi.org/10.1364/AO.48.001784


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Abstract

We present a contactless optical sensor based on the laser-self-mixing effect for real-time measurement of linear and transverse displacements of a moving stage. The sensor is able to measure linear displacements of up to 400 mm along the main optical axis while simultaneously estimating straightness and flatness deviations up to 1 mm . The sensor exploits two identical coplanar nonparallel self-mixing interferometers and requires only one reference plane. The reduction in the number of optical elements allowed by the self-mixing configuration and the intrinsic stiffness of the adopted geometry result in a compact, low-cost, and easy-to-align setup.

© 2009 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(140.2020) Lasers and laser optics : Diode lasers
(230.0250) Optical devices : Optoelectronics
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 20, 2008
Revised Manuscript: January 29, 2009
Manuscript Accepted: February 3, 2009
Published: March 19, 2009

Citation
Simona Ottonelli, Maurizio Dabbicco, Francesco De Lucia, and Gaetano Scamarcio, "Simultaneous measurement of linear and transverse displacements by laser self-mixing," Appl. Opt. 48, 1784-1789 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-9-1784

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