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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 20 — Oct. 7, 2013
  • pp: 24087–24092

Folded cavity angled-grating broad-area lasers

Yunsong Zhao and Lin Zhu  »View Author Affiliations

Optics Express, Vol. 21, Issue 20, pp. 24087-24092 (2013)

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The angled-grating broad-area laser is a promising candidate for high power, high brightness diode laser source. The key point in the design is the angled gratings which can simultaneously support the unique snake-like zigzag lasing mode and eliminate the direct Fabry-Perot (FP) feedback. Unlike a conventional laser waveguide mode, the phase front of the zigzag mode periodically changes along the propagation direction. By use of the mirror symmetry of the zigzag mode, we propose and demonstrate the folded cavity angled-grating broad-area lasers. One benefit of this design is to reduce the required wafer space compared to a regular angled-grating broad-area laser, especially in a long cavity laser for high power operation. Experimental results show that the folded cavity laser exhibits good beam quality in far field with a slightly larger threshold and smaller slope efficiency due to the additional interface loss.

© 2013 OSA

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3460) Lasers and laser optics : Lasers
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 29, 2013
Revised Manuscript: September 9, 2013
Manuscript Accepted: September 17, 2013
Published: October 1, 2013

Yunsong Zhao and Lin Zhu, "Folded cavity angled-grating broad-area lasers," Opt. Express 21, 24087-24092 (2013)

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