Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers
A theoretical model for calculation of the intrinsic linewidth of QCLs is built on the basis of the quantum Langevin approach. It differs from the traditional rate equation model in that the resonant tunneling and the dynamics of coherent interaction can be considered. Results show that the coupling...
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sg-ntu-dr.10356-948132023-02-28T19:38:12Z Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers Liu, Tao Lee, Kenneth E. Wang, Qi Jie School of Electrical and Electronic Engineering DRNTU::Science::Physics::Optics and light A theoretical model for calculation of the intrinsic linewidth of QCLs is built on the basis of the quantum Langevin approach. It differs from the traditional rate equation model in that the resonant tunneling and the dynamics of coherent interaction can be considered. Results show that the coupling strength and the dephasing rate associated with resonant tunneling strongly affect the linewidth of THz QCLs in the incoherent resonant-tunneling transport regime but only induce little influence in the coherent regime. The dynamics of coherent interaction and resonant-tunneling transport show insignificant effects on the linewidth calculation of mid-infrared QCLs due to strong coupling in resonant tunneling. We also demonstrate that by properly designing the active regions of QCLs, one can reduce the intrinsic linewidth according to our model. Published version 2013-02-26T03:52:03Z 2019-12-06T19:02:47Z 2013-02-26T03:52:03Z 2019-12-06T19:02:47Z 2012 2012 Journal Article Liu, T., Lee, K. E., & Wang, Q. J. (2012). Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers. Optics Express, 20(15), 17145-17159. 1094-4087 https://hdl.handle.net/10356/94813 http://hdl.handle.net/10220/9253 10.1364/OE.20.017145 en Optics express © 2012 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.20.017145]. 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 |
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DRNTU::Science::Physics::Optics and light Liu, Tao Lee, Kenneth E. Wang, Qi Jie Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
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A theoretical model for calculation of the intrinsic linewidth of QCLs is built on the basis of the quantum Langevin approach. It differs from the traditional rate equation model in that the resonant tunneling and the dynamics of coherent interaction can be considered. Results show that the coupling strength and the dephasing rate associated with resonant tunneling strongly affect the linewidth of THz QCLs in the incoherent resonant-tunneling transport regime but only induce little influence in the coherent regime. The dynamics of coherent interaction and resonant-tunneling transport show insignificant effects on the linewidth calculation of mid-infrared QCLs due to strong coupling in resonant tunneling. We also demonstrate that by properly designing the active regions of QCLs, one can reduce the intrinsic linewidth according to our model. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Liu, Tao Lee, Kenneth E. Wang, Qi Jie |
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Article |
author |
Liu, Tao Lee, Kenneth E. Wang, Qi Jie |
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Liu, Tao |
title |
Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
title_short |
Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
title_full |
Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
title_fullStr |
Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
title_full_unstemmed |
Effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
title_sort |
effects of resonant tunneling and dynamics of coherent interaction on intrinsic linewidth of quantum cascade lasers |
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2013 |
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https://hdl.handle.net/10356/94813 http://hdl.handle.net/10220/9253 |
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1759858363957510144 |