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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 24 — Nov. 19, 2012
  • pp: 27133–27146

Real-time displacement measurement immune from atmospheric parameters using optical frequency combs

Pu Jian, Olivier Pinel, Claude Fabre, Brahim Lamine, and Nicolas Treps  »View Author Affiliations

Optics Express, Vol. 20, Issue 24, pp. 27133-27146 (2012)

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We propose a direct and real-time displacement measurement using an optical frequency comb, able to compensate optically for index of refraction variations due to atmospheric parameters. This scheme could be useful for applications requiring stringent precision over a long distance in air, a situation where dispersion becomes the main limitation. The key ingredient is the use of a mode-locked laser as a precise source for multi-wavelength interferometry in a homodyne detection scheme. By shaping temporally the local oscillator, one can directly access the desired parameter (distance variation) while being insensitive to fluctuations induced by parameters of the environment such as pressure, temperature, humidity and CO2 content.

© 2012 OSA

OCIS Codes
(120.2920) Instrumentation, measurement, and metrology : Homodyning
(140.4050) Lasers and laser optics : Mode-locked lasers
(280.3400) Remote sensing and sensors : Laser range finder
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 16, 2012
Revised Manuscript: September 3, 2012
Manuscript Accepted: September 4, 2012
Published: November 16, 2012

Pu Jian, Olivier Pinel, Claude Fabre, Brahim Lamine, and Nicolas Treps, "Real-time displacement measurement immune from atmospheric parameters using optical frequency combs," Opt. Express 20, 27133-27146 (2012)

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