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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5684–5690

980 nm high brightness external cavity broad area diode laser bar

Deepak Vijayakumar, Ole Bjarlin Jensen, and Birgitte Thestrup  »View Author Affiliations

Optics Express, Vol. 17, Issue 7, pp. 5684-5690 (2009)

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We demonstrate off-axis spectral beam combining applied to a 980 nm high power broad area diode laser bar. The experiments yielded 9 W of optical power at 30 A of operating current and the measured M2 values of the combined beam from 12 emitters were 1.9 and 6.4 for the fast and the slow axis, respectively. The slow axis beam quality was 5-6 times better than the value obtained from a single emitter in free running mode. A high brightness of 79 MW/cm2-str was achieved using this configuration. To our knowledge, this is the highest brightness level ever achieved from a broad area diode laser bar.

© 2009 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 6, 2009
Revised Manuscript: March 18, 2009
Manuscript Accepted: March 20, 2009
Published: March 25, 2009

Deepak Vijayakumar, Ole B. Jensen, and Birgitte Thestrup, "980 nm high brightness external cavity broad area diode laser bar," Opt. Express 17, 5684-5690 (2009)

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