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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2832–2834

Diffractive coherent combining of a 2.5 kW fiber laser array into a 1.9 kW Gaussian beam

Shawn M. Redmond, Daniel J. Ripin, Charles X. Yu, Steven J. Augst, Tso Yee Fan, Peter A. Thielen, Joshua E. Rothenberg, and Gregory D. Goodno  »View Author Affiliations


Optics Letters, Vol. 37, Issue 14, pp. 2832-2834 (2012)
http://dx.doi.org/10.1364/OL.37.002832


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Abstract

Five 500 W fiber amplifiers were coherently combined using a diffractive optical element combiner, generating a 1.93 kW beam whose M2=1.1 beam quality exceeded that of the inputs. Combining efficiency near 90% at low powers degraded to 79% at full power owing to thermal expansion of the fiber tip array.

© 2012 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 11, 2012
Revised Manuscript: May 11, 2012
Manuscript Accepted: May 13, 2012
Published: July 9, 2012

Citation
Shawn M. Redmond, Daniel J. Ripin, Charles X. Yu, Steven J. Augst, Tso Yee Fan, Peter A. Thielen, Joshua E. Rothenberg, and Gregory D. Goodno, "Diffractive coherent combining of a 2.5 kW fiber laser array into a 1.9 kW Gaussian beam," Opt. Lett. 37, 2832-2834 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-14-2832


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References

  1. C. X. Yu and T. Y. Fan, in High Power Laser Handbook, H. Injeyan and G. D. Goodno, eds. (McGraw-Hill, 2011), pp. 533–566.
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  8. G. D. Goodno, S. J. McNaught, J. E. Rothenberg, T. S. McComb, P. A. Thielen, M. G. Wickham, and M. E. Weber, Opt. Lett. 35, 1542 (2010). [CrossRef]

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