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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 10 — May. 15, 2010
  • pp: 1515–1517

Coherent beam superposition of ten diode lasers with a Dammann grating

David Pabœuf, Florian Emaury, Sébastien de Rossi, Raymond Mercier, Gaëlle Lucas-Leclin, and Patrick Georges  »View Author Affiliations


Optics Letters, Vol. 35, Issue 10, pp. 1515-1517 (2010)
http://dx.doi.org/10.1364/OL.35.001515


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Abstract

We demonstrate the use of a binary diffractive optical element in a very simple setup to convert the multilobed beam from a low fill factor array of coherent laser diodes into a quasi-Gaussian beam. The phase profile of the grating is determined with a phase retrieval algorithm. Experimentally, the conversion efficiency reaches more than 44%. We also establish that this setup can be used to make an effective measurement of the coherency of the laser array.

© 2010 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

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 8, 2009
Revised Manuscript: March 23, 2010
Manuscript Accepted: March 30, 2010
Published: May 5, 2010

Citation
David Pabœuf, Florian Emaury, Sébastien de Rossi, Raymond Mercier, Gaëlle Lucas-Leclin, and Patrick Georges, "Coherent beam superposition of ten diode lasers with a Dammann grating," Opt. Lett. 35, 1515-1517 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-10-1515

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