OSA's Digital Library

Applied Optics

Applied 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)

View Full Text Article

Enhanced HTML    Acrobat PDF (509 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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

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

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)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. K. C. Fan, C. L. Chu, J. L. Liao, and J. I. Mou, “Development of a high-precision straightness measuring system with DVD pick-up head,” Meas. Sci. Technol. 14, 47-54 (2003). [CrossRef]
  2. Q. Feng, B. Zhang, and C. Kuang, “A straightness measurement system using a single-mode fiber-coupled laser module,” Opt. Laser Technol. 36, 279-283 (2004). [CrossRef]
  3. W. Baldwin, “Interferometer system for measuring straightness and roll,” U.S. patent 3,790,284 (5 February 1974).
  4. S. T. Lin, “A laser interferometer for measuring straightness,” Opt. Laser Technol. 33, 195-199 (2001). [CrossRef]
  5. J. Zhang and L. Cai, “Interferometric straightness measurement system using triangular prism,” Opt. Eng. 37, 1785-1789 (1998). [CrossRef]
  6. R. Lang and K. Kobayashi, “External optical feedback effects on semiconductor injection laser properties,” IEEE J. Quantum Electron. 16, 347-355 (1980). [CrossRef]
  7. G. A. Acket, D. Lenstra, A. J. Den Boef, and B. H. Verbeek, “The influence of feedback intensity on longitudinal mode properties and optical noise in index-guided semiconductor lasers,” IEEE J. Quantum Electron. 20, 1163-1169 (1984). [CrossRef]
  8. S. Donati, G. Giuliani, and S. Merlo, “Laser diode feedback interferometer for measurement of displacements without ambiguity,” IEEE J. Quantum Electron. 31, 113-119 (1995). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited