A new method for calculating electron temperature in subbands of quantum cascade lasers

Li Guangxiang; Wei Biao; Zhou Haijun; Sun Yuankun

doi:10.11884/HPLPB202335.220400

Volume 35 Issue 12

Nov. 2023

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Li Guangxiang, Wei Biao, Zhou Haijun, et al. A new method for calculating electron temperature in subbands of quantum cascade lasers[J]. High Power Laser and Particle Beams, 2023, 35: 121003. doi: 10.11884/HPLPB202335.220400

Citation:

Li Guangxiang, Wei Biao, Zhou Haijun, et al. A new method for calculating electron temperature in subbands of quantum cascade lasers[J]. High Power Laser and Particle Beams, 2023, 35: 121003. doi: 10.11884/HPLPB202335.220400

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A new method for calculating electron temperature in subbands of quantum cascade lasers

doi: 10.11884/HPLPB202335.220400

1.
College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
2.
National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology, Chengdu 611731, China

Received Date: 2023-08-28
Accepted Date: 2023-10-21
Rev Recd Date: 2023-10-21

Available Online: 2023-11-04

Publish Date: 2023-12-15

Abstract

Abstract

Quantum cascade laser is a newly developed important medium and far infrared laser source. In view of the important parameter of energy band electron temperature in the research and design of quantum cascade lasers, based on the relationship between electron kinetic energy and temperature and Fermi Golden Rule, this paper optimizes the rate equation so that it can calculate the subband electron temperature, thus achieving a more accurate solution of the rate equation. The calculation results show that compared with the existing kinetic energy balance method, this method describes the process of electron temperature change in the energy band in detail, and there is no need to use the optimization algorithm for a solution. When different initial temperatures are selected, the electron temperature of each energy level can be solved by self-consistent solution, and the convergence value with good consistency can be obtained. The results show that the deviation of the convergence value of electron temperature from the mean value is less than 8%, and the deviation of scattering rate is less than 1.6%. This study provides a new method for the design and research of quantum cascade lasers.
- quantum cascade lasers,
- rate equation,
- electron temperature of energy bands,
- numerical study,
- scattering rate

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References(16)

References

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