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-...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/79635 http://hdl.handle.net/10220/19581 |
| _version_ | 1826128658741329920 |
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| author | Dang, Cuong Lee, Joonhee Roh, Kwangdong Kim, Hanbit Ahn, Sungmo Jeon, Heonsu Breen, Craig Steekel, Jonathan S. Coe-Sullivan, Seth Nurmikko, Arto |
| 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 |
| author_sort | Dang, Cuong |
| collection | NTU |
| 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%. |
| first_indexed | 2024-10-01T07:28:33Z |
| format | Journal Article |
| id | ntu-10356/79635 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:28:33Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-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 |
| 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 |
| title | 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_short | 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 |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/79635 http://hdl.handle.net/10220/19581 |
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