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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 10 — May. 15, 2007
  • pp: 1296–1298

Multiwavelength ultralow-threshold lasing in quantum dot photonic crystal microcavities

S. Chakravarty, P. Bhattacharya, S. Chakrabarti, and Z. Mi  »View Author Affiliations

Optics Letters, Vol. 32, Issue 10, pp. 1296-1298 (2007)

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We demonstrate multiwavelength lasing of resonant modes in linear (L3) microcavities in a triangular-lattice 2D photonic crystal (PC) slab. The broad spontaneous emission spectrum from coupled quantum dots, modified by the PC microcavity, is studied as a function of the intensity of incident optical excitation. We observe lasing with an ultralow-threshold power of 600 nW and an output efficiency of approximately 3% at threshold. Two other resonant modes exhibit weaker turnon characteristics and thresholds of 2.5 and 200 μ W , respectively.

© 2007 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators

ToC Category:
Optical Devices

Original Manuscript: December 21, 2006
Revised Manuscript: February 14, 2007
Manuscript Accepted: February 22, 2007
Published: April 17, 2007

S. Chakravarty, P. Bhattacharya, S. Chakrabarti, and Z. Mi, "Multiwavelength ultralow-threshold lasing in quantum dot photonic crystal microcavities," Opt. Lett. 32, 1296-1298 (2007)

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