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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 6 — Mar. 19, 2007
  • pp: 3201–3205

Coherent power combination of two Master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops

Wei Liang, Naresh Satyan, Amnon Yariv, Anthony Kewitsch, George Rakuljic, Firooz Aflatouni, Hossein Hashemi, and Jeffrey Ungar  »View Author Affiliations


Optics Express, Vol. 15, Issue 6, pp. 3201-3205 (2007)
http://dx.doi.org/10.1364/OE.15.003201


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Abstract

Using heterodyne Optical Phase-Locked Loops (OPLLs), two 1W high power 1550 nm master-oscillator-power-amplifier (MOPA) semiconductor lasers operating as current controlled oscillators are phase-locked to a 1 mW reference laser. The signals of the two MOPAs are then coherently combined and their mutual coherence is studied. In each OPLL, the acquisition range is increased to +/-1.1GHz with the help of an aided-acquisition circuit. Control of the phase of a single slave MOPA is demonstrated using a RF phase shifter. The differential phase error between two MOPAs locked to the common reference laser is typically 22 degrees.

© 2007 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3490) Lasers and laser optics : Lasers, distributed-feedback

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 10, 2007
Revised Manuscript: March 4, 2007
Manuscript Accepted: March 11, 2007
Published: March 19, 2007

Citation
Wei Liang, Naresh Satyan, Amnon Yariv, Anthony Kewitsch, George Rakuljic, Firooz Aflatouni, Hossein Hashemi, and Jeffrey Ungar, "Coherent power combination of two Master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops," Opt. Express 15, 3201-3205 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-6-3201


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References

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