Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films

Colloidal quantum dots (CQD) are now making their entry to full-color displays, endowed by their brightness and single-material base. By contrast, many obstacles have been encountered in their use towards lasers. We demonstrate here optically pumped distributed feedback (DFB) lasers, based on close-...

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Main Authors: Dang, Cuong, Lee, Joonhee, Roh, Kwangdong, Kim, Hanbit, Ahn, Sungmo, Jeon, Heonsu, Breen, Craig, Steekel, Jonathan S., Coe-Sullivan, Seth, Nurmikko, Arto
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/79635
http://hdl.handle.net/10220/19581
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-796352020-03-07T13:57:23Z Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films Dang, Cuong Lee, Joonhee Roh, Kwangdong Kim, Hanbit Ahn, Sungmo Jeon, Heonsu Breen, Craig Steekel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Colloidal quantum dots (CQD) are now making their entry to full-color displays, endowed by their brightness and single-material base. By contrast, many obstacles have been encountered in their use towards lasers. We demonstrate here optically pumped distributed feedback (DFB) lasers, based on close-packed, solid films self-assembled from type-I CQDs. Notably, the single mode CQD-DFB lasers could reach such a low threshold as to be pumpable with a compact pulsed source in a quasi-continuous wave regime. Our results show the spatially and temporally coherent laser beam outputs with power of 400 μW and a quantum efficiency of 32%. Accepted version 2014-06-06T02:25:15Z 2019-12-06T13:29:50Z 2014-06-06T02:25:15Z 2019-12-06T13:29:50Z 2013 2013 Journal Article Dang, C., Lee, J., Roh, K., Kim, H., Ahn, S., Jeon, H., et al. (2013). Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films. Applied Physics Letters, 103, 171104-. https://hdl.handle.net/10356/79635 http://hdl.handle.net/10220/19581 10.1063/1.4826147 180579 en Applied physics letters © 2013 AIP Publishing LLC. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Physics Letters, AIP Publishing LLC. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1063/1.4826147]. application/pdf application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Dang, Cuong
Lee, Joonhee
Roh, Kwangdong
Kim, Hanbit
Ahn, Sungmo
Jeon, Heonsu
Breen, Craig
Steekel, Jonathan S.
Coe-Sullivan, Seth
Nurmikko, Arto
Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
description Colloidal quantum dots (CQD) are now making their entry to full-color displays, endowed by their brightness and single-material base. By contrast, many obstacles have been encountered in their use towards lasers. We demonstrate here optically pumped distributed feedback (DFB) lasers, based on close-packed, solid films self-assembled from type-I CQDs. Notably, the single mode CQD-DFB lasers could reach such a low threshold as to be pumpable with a compact pulsed source in a quasi-continuous wave regime. Our results show the spatially and temporally coherent laser beam outputs with power of 400 μW and a quantum efficiency of 32%.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Dang, Cuong
Lee, Joonhee
Roh, Kwangdong
Kim, Hanbit
Ahn, Sungmo
Jeon, Heonsu
Breen, Craig
Steekel, Jonathan S.
Coe-Sullivan, Seth
Nurmikko, Arto
format Article
author Dang, Cuong
Lee, Joonhee
Roh, Kwangdong
Kim, Hanbit
Ahn, Sungmo
Jeon, Heonsu
Breen, Craig
Steekel, Jonathan S.
Coe-Sullivan, Seth
Nurmikko, Arto
author_sort Dang, Cuong
title Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
title_short Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
title_full Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
title_fullStr Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
title_full_unstemmed Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
title_sort highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films
publishDate 2014
url https://hdl.handle.net/10356/79635
http://hdl.handle.net/10220/19581
_version_ 1681046393631801344