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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3627–3632

CW 50W/M2 = 10.9 diode laser source by spectral beam combining based on a transmission grating

Jun Zhang, Hangyu Peng, Xihong Fu, Yun Liu, Li Qin, Guoqing Miao, and Lijun Wang  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 3627-3632 (2013)

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An external cavity structure based on the −1st transmission grating is introduced to spectral beam combining a 970 nm diode laser bar. A CW output power of 50.8 W, an electro-optical conversion efficiency of 45%, a spectral beam combining efficiency of 90.2% and a holistic M2 value of 10.9 are achieved. This shows a way for a diode laser source with several KW power and diffraction-limited beam quality at the same time.

© 2013 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(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: December 3, 2012
Revised Manuscript: January 15, 2013
Manuscript Accepted: January 23, 2013
Published: February 5, 2013

Jun Zhang, Hangyu Peng, Xihong Fu, Yun Liu, Li Qin, Guoqing Miao, and Lijun Wang, "CW 50W/M2 = 10.9 diode laser source by spectral beam combining based on a transmission grating," Opt. Express 21, 3627-3632 (2013)

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