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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 18 — Aug. 31, 2009
  • pp: 15991–15999

Precise control of broadband frequency chirps using optoelectronic feedback

Naresh Satyan, Arseny Vasilyev, George Rakuljic, Victor Leyva, and Amnon Yariv  »View Author Affiliations

Optics Express, Vol. 17, Issue 18, pp. 15991-15999 (2009)

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We demonstrate the generation of wideband frequency sweeps using a semiconductor laser in an optoelectronic feedback loop. The rate and shape of the optical frequency sweep is locked to and determined by the frequency of a reference electronic signal, leading to an agile, high coherence swept-frequency source for laser ranging and 3-D imaging applications. Using a reference signal of constant frequency, a transform-limited linear sweep of 100 GHz in 1 ms is achieved, and real-time ranging with a spatial resolution of 1.5 mm is demonstrated. Further, arbitrary frequency sweeps can be achieved by tuning the frequency of the input electronic signal. Broadband quadratic and exponential optical frequency sweeps are demonstrated using this technique.

© 2009 OSA

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(280.3640) Remote sensing and sensors : Lidar
(140.3518) Lasers and laser optics : Lasers, frequency modulated

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 23, 2009
Revised Manuscript: August 14, 2009
Manuscript Accepted: August 19, 2009
Published: August 25, 2009

Naresh Satyan, Arseny Vasilyev, George Rakuljic, Victor Leyva, and Amnon Yariv, "Precise control of broadband frequency chirps using optoelectronic feedback," Opt. Express 17, 15991-15999 (2009)

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