Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers
The intrinsic narrow linewidth of quantum cascade lasers (QCLs) promises wide applications such as highsensitive trace-gas detection. However, so far limited work has been reported in intrinsic linewidth characteristics of QCLs. In this paper, we theoretically investigate the linewidth broadening ca...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/95886 http://hdl.handle.net/10220/10069 |
| _version_ | 1811696109089718272 |
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| author | Liu, T. Wang, Qi Jie |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Liu, T. Wang, Qi Jie |
| author_sort | Liu, T. |
| collection | NTU |
| description | The intrinsic narrow linewidth of quantum cascade lasers (QCLs) promises wide applications such as highsensitive trace-gas detection. However, so far limited work has been reported in intrinsic linewidth characteristics of QCLs. In this paper, we theoretically investigate the linewidth broadening caused by intrinsic temperature fluctuations in both mid-infrared and Terahertz QCLs. When microscopic features of the refractive index variations associated with the intersubband transitions and energy level broadening in mid-infrared QCLs are considered, the linewidth broadening increases up to a few hundred Hz in mid-IR QCLs. |
| first_indexed | 2024-10-01T07:34:08Z |
| format | Conference Paper |
| id | ntu-10356/95886 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:34:08Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/958862023-02-28T19:17:55Z Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers Liu, T. Wang, Qi Jie School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Quantum Sensing and Nanophotonic Devices (9th : 2012 : San Francisco, USA) DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio The intrinsic narrow linewidth of quantum cascade lasers (QCLs) promises wide applications such as highsensitive trace-gas detection. However, so far limited work has been reported in intrinsic linewidth characteristics of QCLs. In this paper, we theoretically investigate the linewidth broadening caused by intrinsic temperature fluctuations in both mid-infrared and Terahertz QCLs. When microscopic features of the refractive index variations associated with the intersubband transitions and energy level broadening in mid-infrared QCLs are considered, the linewidth broadening increases up to a few hundred Hz in mid-IR QCLs. Published version 2013-06-07T03:40:31Z 2019-12-06T19:22:52Z 2013-06-07T03:40:31Z 2019-12-06T19:22:52Z 2012 2012 Conference Paper Wang, Q. J., & Liu, T. (2012). Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers. Proceedings of SPIE-Quantum Sensing and Nanophotonic Devices IX, 8268. https://hdl.handle.net/10356/95886 http://hdl.handle.net/10220/10069 10.1117/12.907178 en © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE-Quantum Sensing and Nanophotonic Devices IX and is made available as an electronic reprint (preprint) with permission of Society of Photo-Optical Instrumentation Engineers (SPIE). The paper can be found at the following official DOI: [http://dx.doi.org/10.1117/12.907178]. 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::Antennas, wave guides, microwaves, radar, radio Liu, T. Wang, Qi Jie Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title | Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title_full | Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title_fullStr | Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title_full_unstemmed | Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title_short | Linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| title_sort | linewidth broadening caused by intrinsic temperature fluctuations in quantum cascade lasers |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio |
| url | https://hdl.handle.net/10356/95886 http://hdl.handle.net/10220/10069 |
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