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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 15 — Jul. 29, 2013
  • pp: 17912–17919

Fast-to-slow axis mode imaging for brightness enhancement of a broad-area laser diode array

Andrew M. Jones and Juliet T. Gopinath  »View Author Affiliations

Optics Express, Vol. 21, Issue 15, pp. 17912-17919 (2013)

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Broad-area laser (BAL) diodes have found use in numerous applications requiring multi-watt powers, but remain limited by poor spatial beam quality. A novel laser cavity that enhances the brightness of a BAL array has been demonstrated. Wavelength beam combining (WBC) is used to spatially overlap output from the emitters. Improved beam quality is achieved by imaging the fast-axis mode onto the slow axis of the BAL array. The brightness is enhanced twofold over a typical Littman-Metcalf WBC cavity, reaching 47 MW·cm−2·sr−1 at an output power of 1.16 W.

© 2013 OSA

OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3410) Lasers and laser optics : Laser resonators
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 29, 2013
Manuscript Accepted: July 1, 2013
Published: July 18, 2013

Andrew M. Jones and Juliet T. Gopinath, "Fast-to-slow axis mode imaging for brightness enhancement of a broad-area laser diode array," Opt. Express 21, 17912-17919 (2013)

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