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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 18800–18806

Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers

Kwangdong Roh, Cuong Dang, Joonhee Lee, Songtao Chen, Jonathan S. Steckel, Seth Coe-Sullivan, and Arto Nurmikko  »View Author Affiliations


Optics Express, Vol. 22, Issue 15, pp. 18800-18806 (2014)
http://dx.doi.org/10.1364/OE.22.018800


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Abstract

We demonstrate surface emitting distributed feedback (DFB) lasers across the red, green, and blue from densely packed colloidal quantum dot (CQD) films. The solid CQD films were deposited on periodic grating patterns to enable 2nd-order DFB lasing action at mere 120, 280, and 330 μJ/cm2 of optical pumping energy densities for red, green, and blue DFB lasers, respectively. The lasers operated in single mode operation with less than 1 nm of full-width-half-maximum. We measured far-field patterns showing high degree of spatial beam coherence. Specifically, by taking advantage of single exciton optical gain regime from our engineered CQDs, we can significantly suppress the Auger recombination to reduce lasing threshold and achieve quasi-steady state, optically pumped operation.

© 2014 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.7300) Lasers and laser optics : Visible lasers
(230.5590) Optical devices : Quantum-well, -wire and -dot devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 17, 2014
Revised Manuscript: July 17, 2014
Manuscript Accepted: July 18, 2014
Published: July 25, 2014

Citation
Kwangdong Roh, Cuong Dang, Joonhee Lee, Songtao Chen, Jonathan S. Steckel, Seth Coe-Sullivan, and Arto Nurmikko, "Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers," Opt. Express 22, 18800-18806 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-15-18800


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