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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 5006–5008

High efficiency coherent beam combining of semiconductor optical amplifiers

Kevin J. Creedon, Shawn M. Redmond, Gary M. Smith, Leo J. Missaggia, Michael K. Connors, Jan E. Kansky, Tso Yee Fan, George W. Turner, and Antonio Sanchez-Rubio  »View Author Affiliations


Optics Letters, Vol. 37, Issue 23, pp. 5006-5008 (2012)
http://dx.doi.org/10.1364/OL.37.005006


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Abstract

We demonstrate 40 W coherently combined output power in a single diffraction-limited beam from a one-dimensional 47-element array of angled-facet slab-coupled optical waveguide amplifiers at 1064 nm. The output from each emitter was collimated and overlapped onto a diffractive optical element combiner using a common transform lens. Phase locking was achieved via active feedback on each amplifier’s drive current to maximize the power in the combined beam. The combining efficiency at all current levels was nearly constant at 87%.

© 2012 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3298) Lasers and laser optics : Laser beam combining
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Diffraction and Gratings

History
Original Manuscript: August 27, 2012
Revised Manuscript: October 22, 2012
Manuscript Accepted: November 1, 2012
Published: November 30, 2012

Citation
Kevin J. Creedon, Shawn M. Redmond, Gary M. Smith, Leo J. Missaggia, Michael K. Connors, Jan E. Kansky, Tso Yee Fan, George W. Turner, and Antonio Sanchez-Rubio, "High efficiency coherent beam combining of semiconductor optical amplifiers," Opt. Lett. 37, 5006-5008 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-23-5006


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References

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