Investigation of Subband Electron Temperatures of Quantum Cascade Lasers
| Autor: | Zhou Pingwei, Zhong Sencheng, Li-Guo Zhu, Zhai Zhaohui, Yuankun Sun, Anping Yu, Tao Chen, Chen Peng, Zeren Li, Gang Chen |
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| Rok vydání: | 2019 |
| Předmět: |
lcsh:Applied optics. Photonics
Materials science electron temperature Quantum cascade laser 02 engineering and technology Electron Temperature measurement Molecular physics law.invention law Electric field 0202 electrical engineering electronic engineering information engineering lcsh:QC350-467 Stimulated emission Electrical and Electronic Engineering self-designed 020208 electrical & electronic engineering Gain lcsh:TA1501-1820 mid-infrared 020206 networking & telecommunications Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Laser Atomic and Molecular Physics and Optics Cascade Electron temperature lcsh:Optics. Light |
| Zdroj: | IEEE Photonics Journal, Vol 11, Iss 1, Pp 1-10 (2019) |
| ISSN: | 1943-0647 |
| DOI: | 10.1109/jphot.2019.2896081 |
| Popis: | The electron temperature of each subband is the key to understanding the characteristics of quantum cascade lasers (QCLs). We show herein a method, based on the particle swarm optimization algorithm, to obtain the electron temperature of the conduction band in the active region of QCLs. Accurate subband electron temperatures at room temperature, low temperature, and under various external electric fields are obtained. Furthermore, we discuss the variation and distribution of subband electron temperature that occurs during the operation of QCLs. The laser gain and I-V curves are obtained from the subband electron temperature. A comparison of these results with experimental results confirms that consideration of the subband electron temperature can improve our understanding of QCLs. |
| Databáze: | OpenAIRE |
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