dc.contributor.authorRoh, Kwangdong
dc.contributor.authorDang, Cuong
dc.contributor.authorLee, Joonhee
dc.contributor.authorChen, Songtao
dc.contributor.authorSteckel, Jonathan S.
dc.contributor.authorCoe-Sullivan, Seth
dc.contributor.authorNurmikko, Arto
dc.identifier.citationRoh, K., Dang, C., Lee, J., Chen, S., Steckel, J. S., Coe-Sullivan, S., et al. (2014). Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers. Optics Express, 22(15), 18800-18806.en_US
dc.description.abstractWe 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.en_US
dc.relation.ispartofseriesOptics expressen_US
dc.rights© 2014 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: http://dx.doi.org/10.1364/OE.22.018800.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
dc.titleSurface-emitting red, green, and blue colloidal quantum dot distributed feedback lasersen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US

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