Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions
We have demonstrated the first net laser cooling of semiconductors using CdS nanoribbons (or nanobelts) in this work. This net cooling effect is found to be facilitated by resonant high order annihilation of longitudinal optical (LO) phonons due to a strong exciton-LO phonon Fröhlich interactions. U...
| Main Authors: | , , , |
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| Format: | Conference Paper |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/98374 http://hdl.handle.net/10220/13357 |
| _version_ | 1826123133151608832 |
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| author | Xiong, Qihua Zhang, Jun Li, Dehui Chen, Renjie |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Xiong, Qihua Zhang, Jun Li, Dehui Chen, Renjie |
| author_sort | Xiong, Qihua |
| collection | NTU |
| description | We have demonstrated the first net laser cooling of semiconductors using CdS nanoribbons (or nanobelts) in this work. This net cooling effect is found to be facilitated by resonant high order annihilation of longitudinal optical (LO) phonons due to a strong exciton-LO phonon Fröhlich interactions. Using a pumpprobe luminescence thermometry technique to measure the local temperature change, we have achieved as large as 40 K cooling temperature from room temperature pumped by a 514 nm laser while a 532 nm laser pumping led to a cooling of 20 K. At 100 K, only the 532 nm laser pumping can lead to a net cooling of around 15 K. Our work opens new directions to search laser cooling semiconductors and makes it feasible to achieve all solid-state cryocoolers based on semiconductors. |
| first_indexed | 2024-10-01T05:59:39Z |
| format | Conference Paper |
| id | ntu-10356/98374 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:59:39Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/983742023-02-28T19:17:40Z Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions Xiong, Qihua Zhang, Jun Li, Dehui Chen, Renjie School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Laser Refrigeration of Solids (6th : 2013 : San Francisco, USA) We have demonstrated the first net laser cooling of semiconductors using CdS nanoribbons (or nanobelts) in this work. This net cooling effect is found to be facilitated by resonant high order annihilation of longitudinal optical (LO) phonons due to a strong exciton-LO phonon Fröhlich interactions. Using a pumpprobe luminescence thermometry technique to measure the local temperature change, we have achieved as large as 40 K cooling temperature from room temperature pumped by a 514 nm laser while a 532 nm laser pumping led to a cooling of 20 K. At 100 K, only the 532 nm laser pumping can lead to a net cooling of around 15 K. Our work opens new directions to search laser cooling semiconductors and makes it feasible to achieve all solid-state cryocoolers based on semiconductors. Published version 2013-09-06T03:00:50Z 2019-12-06T19:54:25Z 2013-09-06T03:00:50Z 2019-12-06T19:54:25Z 2013 2013 Conference Paper Zhang, J., Li, D., Chen, R., & Xiong, Q. (2013). Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions. Proceeding of SPIE 8638, Laser Refrigeration of Solids VI, 863808. https://hdl.handle.net/10356/98374 http://hdl.handle.net/10220/13357 10.1117/12.2002713 en © 2013 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Proceeding of SPIE, Laser Refrigeration of Solids VI and is made available as an electronic reprint (preprint) with permission of SPIE. The paper can be found at the following official DOI: [http://dx.doi.org/10.1117/12.2002713]. 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 | Xiong, Qihua Zhang, Jun Li, Dehui Chen, Renjie Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title | Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title_full | Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title_fullStr | Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title_full_unstemmed | Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title_short | Laser cooling of a semiconductor by 40 kelvin: an optical refrigerator based on cadmium sulfide nanoribbions |
| title_sort | laser cooling of a semiconductor by 40 kelvin an optical refrigerator based on cadmium sulfide nanoribbions |
| url | https://hdl.handle.net/10356/98374 http://hdl.handle.net/10220/13357 |
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