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

C. Dang; J. Lee; K. Roh; H. Kim; S. Ahn; H. Jeon; C. Breen; J. S. Steckel; S. Coe-Sullivan; A. Nurmikko

doi:10.1063/1.4826147

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

C. Dang
, J. Lee
, K. Roh
, H. Kim
, S. Ahn
, H. Jeon
, C. Breen
, J. S. Steckel
, S. Coe-Sullivan
, A. Nurmikko

Department of Physics

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

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%.

Original language	English
Article number	171104
Journal	Applied Physics Letters
Volume	103
Issue number	17
DOIs	https://doi.org/10.1063/1.4826147
State	Published - 21 Oct 2013

Bibliographical note

Funding Information:
Financial support for this research was provided by the National Science Foundation under grant: ECCS-1128331 and Department of Energy (BES office) under Grant: DE-FG02-07ER46387.

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

abstract = "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\%.",

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T1 - Highly efficient, spatially coherent distributed feedback lasers from dense colloidal quantum dot films

AU - Dang, C.

AU - Lee, J.

AU - Roh, K.

AU - Kim, H.

AU - Ahn, S.

AU - Jeon, H.

AU - Breen, C.

AU - Steckel, J. S.

AU - Coe-Sullivan, S.

AU - Nurmikko, A.

N1 - Funding Information: Financial support for this research was provided by the National Science Foundation under grant: ECCS-1128331 and Department of Energy (BES office) under Grant: DE-FG02-07ER46387.

PY - 2013/10/21

Y1 - 2013/10/21

N2 - 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%.

AB - 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%.

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U2 - 10.1063/1.4826147

DO - 10.1063/1.4826147

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VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

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ER -

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

Abstract

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