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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry Van Driel
  • Vol. 26, Iss. 7 — Jul. 1, 2009
  • pp: 1417–1422

Single-mode operation of a large optically pumped triangular laser with lateral air trenches

Danyu Liu, Haroldo T. Hattori, Lan Fu, Hark Hoe Tan, and Chennupati Jagadish  »View Author Affiliations

JOSA B, Vol. 26, Issue 7, pp. 1417-1422 (2009)

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A triangular resonator has fewer modes than other polygonal lasers such as microdisk and square lasers with similar areas. However, a large resonator with a side of 8 μ m can still resonate at many distinct wavelengths. We show experimentally that the introduction of air trenches to the sides of the triangular resonator can lead to single-mode operation of the laser device. The air trenches will considerably increase the radiation losses of most of the resonant modes, except for a mode with weak magnetic fields at the position of the trenches. This high quality factor mode will be the only mode able to reach lasing in the modified structure, as we show experimentally.

© 2009 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.2020) Lasers and laser optics : Diode lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 30, 2009
Revised Manuscript: May 18, 2009
Manuscript Accepted: May 23, 2009
Published: June 24, 2009

Danyu Liu, Haroldo T. Hattori, Lan Fu, Hark Hoe Tan, and Chennupati Jagadish, "Single-mode operation of a large optically pumped triangular laser with lateral air trenches," J. Opt. Soc. Am. B 26, 1417-1422 (2009)

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