Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers
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 p...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/79677 http://hdl.handle.net/10220/20393 |
| _version_ | 1826111195085537280 |
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| author | Roh, Kwangdong Dang, Cuong Lee, Joonhee Chen, Songtao Steckel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Roh, Kwangdong Dang, Cuong Lee, Joonhee Chen, Songtao Steckel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto |
| author_sort | Roh, Kwangdong |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T02:46:42Z |
| format | Journal Article |
| id | ntu-10356/79677 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:46:42Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/796772020-03-07T13:56:08Z Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers Roh, Kwangdong Dang, Cuong Lee, Joonhee Chen, Songtao Steckel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics 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. Published version 2014-08-25T02:37:15Z 2019-12-06T13:30:49Z 2014-08-25T02:37:15Z 2019-12-06T13:30:49Z 2014 2014 Journal Article Roh, 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. 1094-4087 https://hdl.handle.net/10356/79677 http://hdl.handle.net/10220/20393 10.1364/OE.22.018800 en Optics express © 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. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Roh, Kwangdong Dang, Cuong Lee, Joonhee Chen, Songtao Steckel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title | Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title_full | Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title_fullStr | Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title_full_unstemmed | Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title_short | Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers |
| title_sort | surface emitting red green and blue colloidal quantum dot distributed feedback lasers |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics |
| url | https://hdl.handle.net/10356/79677 http://hdl.handle.net/10220/20393 |
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