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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 4 — Feb. 15, 2008
  • pp: 354–356

Diffractive-optics-based beam combination of a phase-locked fiber laser array

Eric C. Cheung, James G. Ho, Gregory D. Goodno, Robert R. Rice, Josh Rothenberg, Peter Thielen, Mark Weber, and Michael Wickham  »View Author Affiliations


Optics Letters, Vol. 33, Issue 4, pp. 354-356 (2008)
http://dx.doi.org/10.1364/OL.33.000354


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Abstract

A diffractive optical element (DOE) is used as a beam combiner for an actively phase-locked array of fiber lasers. Use of a DOE eliminates the far-field sidelobes and the accompanying loss of beam quality typically observed in tiled coherent laser arrays. Using this technique, we demonstrated coherent combination of five fiber lasers with 91% efficiency and M 2 = 1.04 . Combination efficiency and phase locking is robust even with large amplitude and phase fluctuations on the input laser array elements. Calculations and power handling measurements suggest that this approach can scale to both high channel counts and high powers.

© 2008 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: November 27, 2007
Revised Manuscript: January 13, 2008
Manuscript Accepted: January 16, 2008
Published: February 12, 2008

Citation
Eric C. Cheung, James G. Ho, Gregory D. Goodno, Robert R. Rice, Josh Rothenberg, Peter Thielen, Mark Weber, and Michael Wickham, "Diffractive-optics-based beam combination of a phase-locked fiber laser array," Opt. Lett. 33, 354-356 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-4-354

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