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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 20 — Oct. 15, 2012
  • pp: 4272–4274

Multichannel polarization stabilization for coherently combined fiber laser arrays

Gregory D. Goodno, Stuart J. McNaught, Mark E. Weber, and S. Benjamin Weiss  »View Author Affiliations


Optics Letters, Vol. 37, Issue 20, pp. 4272-4274 (2012)
http://dx.doi.org/10.1364/OL.37.004272


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Abstract

We demonstrate a simplified approach toward active polarization control in coherently combined laser architectures. By leveraging optical phase dithers applied by a phase controller, polarization error signals are generated for an entire laser array from a single beam sample of the combined output, enabling closed-loop polarization locking of non-polarization-maintaining fibers. The concept is shown to be compatible with both hill-climbing and synchronous multidither phase control methods. Simultaneous phase locking and polarization locking was demonstrated for a five-fiber array with > 99 % phasing efficiency and > 20 dB polarization extinction ratio.

© 2012 Optical Society of America

OCIS Codes
(140.3290) Lasers and laser optics : Laser arrays
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 16, 2012
Revised Manuscript: August 20, 2012
Manuscript Accepted: August 22, 2012
Published: October 11, 2012

Citation
Gregory D. Goodno, Stuart J. McNaught, Mark E. Weber, and S. Benjamin Weiss, "Multichannel polarization stabilization for coherently combined fiber laser arrays," Opt. Lett. 37, 4272-4274 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-20-4272

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