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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 9 — May. 1, 2006
  • pp: 1253–1255

Efficient, high-brightness wavelength-beam-combined commercial off-the-shelf diode stacks achieved by use of a wavelength-chirped volume Bragg grating

B. Chann, A. K. Goyal, T. Y. Fan, A. Sanchez-Rubio, B. L. Volodin, and V. S. Ban  »View Author Affiliations


Optics Letters, Vol. 31, Issue 9, pp. 1253-1255 (2006)
http://dx.doi.org/10.1364/OL.31.001253


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Abstract

We report a method of scaling the spatial brightness from commercial off-the-shelf diode laser stacks through wavelength beam combining, by use of a linearly wavelength-chirped volume Bragg grating (VBG). Using a three-bar commercial stack of broad-area lasers and a VBG, we demonstrate 89.5 W cw of beam-combined output with a beam-combining efficiency of 75%. The output beam has a propagation factor M 2 26 on the slow axis and M 2 21 on the fast axis. This corresponds to a brightness of 20 MW cm 2 sr . To our knowledge, this is the highest brightness broad-area diode laser system. We achieve 81% coupling efficiency into a 100 μ m , 0.22 N.A. fiber.

© 2006 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3290) Lasers and laser optics : Laser arrays
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3410) Lasers and laser optics : Laser resonators

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 16, 2005
Revised Manuscript: February 3, 2006
Manuscript Accepted: February 3, 2006

Citation
B. Chann, A. K. Goyal, T. Y. Fan, A. Sanchez-Rubio, B. L. Volodin, and V. S. Ban, "Efficient, high-brightness wavelength-beam-combined commercial off-the-shelf diode stacks achieved by use of a wavelength-chirped volume Bragg grating," Opt. Lett. 31, 1253-1255 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-9-1253

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