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Precise control of broadband frequency chirps using optoelectronic feedback

Satyan, Naresh and Vasilyev, Arseny and Rakuljic, George and Leyva, Victor and Yariv, Amnon (2009) Precise control of broadband frequency chirps using optoelectronic feedback. Optics Express, 17 (18). pp. 15991-15999. ISSN 1094-4087.

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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 transformlimited 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.

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Additional Information:© 2009 Optical Society of America. Received 23 Apr 2009; revised 14 Aug 2009; accepted 19 Aug 2009; published 25 Aug 2009. This work was supported in part by DARPA's MTO office (Dr R. Esman) and in part by the Caltech Lee Center for Advanced Networking.
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Caltech Lee Center for Advanced NetworkingUNSPECIFIED
Issue or Number:18
Classification Code:OCIS Codes: (140.3518) Lasers, frequency modulated; (140.3490) Lasers, distributedfeedback;
Record Number:CaltechAUTHORS:20091001-095735947
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Official Citation: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)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16141
Deposited By: Jason Perez
Deposited On:06 Oct 2009 21:14
Last Modified:03 Oct 2019 01:07

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