NDLI: Self-consistent thermal simulation of GaAs/Al$_{0.45}$Ga$

Content Provider	Springer Nature Link
Author	Shi, Y. B. Aksamija, Z. Knezevic, I.
Copyright Year	2012
Abstract	This paper presents a self-consistent thermal model for quantum cascade lasers (QCLs) that takes into account the nonuniform heat generation distribution in the active region as well as the temperature dependences of the heat generation rate and thermal conductivity. The model extracts the heat generation rate from the electron-optical phonon scattering recorded during the ensemble Monte Carlo (EMC) simulation of electron transport in a single QCL stage at different temperatures. The extracted heat generation rate, in conjunction with temperature-dependent thermal conductivities, enables us to solve the nonlinear heat diffusion equation in a self-consistent manner. The model is used to investigate the cross-plane temperature distribution throughout a 9.4 μm infrared GaAs-based QCL. The nonlinear effects stemming from the temperature dependence of thermal conductivity and the heat generation rate are studied. Finally, the accuracy of using the equivalent uniform heat source with the total power obtained from experiments to model the thermal performance of QCLs is evaluated and discussed.
Starting Page	144
Ending Page	151
Page Count	8
File Format	PDF
ISSN	15698025
Journal	Journal of Computational Electronics
Volume Number	11
Issue Number	1
e-ISSN	15728137
Language	English
Publisher	Springer US
Publisher Date	2012-02-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Quantum cascade lasers Thermal model Heating Nonlinear effects Phonon transport Monte Carlo Theoretical, Mathematical and Computational Physics Electrical Engineering ApplicationMathematics/Computational Methods of Engineering Mechanical Engineering Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Modeling and Simulation

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