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Two‐dimensional model of heat flow in edge‐emitting laser revisited: A new and more versatile approach
Author(s) -
Szymański Michał,
Kozlowska Anna,
Maląg Andrzej,
Hoser Paweł
Publication year - 2020
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2745
Subject(s) - matlab , enhanced data rates for gsm evolution , work (physics) , laser , software , thermal , flow (mathematics) , surface (topology) , computer science , code (set theory) , mechanics , layer (electronics) , leading edge , heat flow , materials science , mechanical engineering , optics , physics , engineering , thermodynamics , geometry , nanotechnology , mathematics , artificial intelligence , set (abstract data type) , programming language , operating system
An analytical, two‐dimensional, stationary model of heat flow in edge‐emitting laser is revisited. In the work, we show how to use this approach to be able to calculate the temperature of the entire device including the most susceptible for thermal runaway region, namely the vicinity of the joint of mirrors and an active layer. Numerical tools based on our considerations are implemented in Matlab code and available at the software developer's web site. A procedure of investigation of surface recombination at facets with the help of our model combined with mirror temperature measurements is proposed. To get an insight in reasonableness of our theoretical research, we calculated temperature profiles and surface recombination velocities for example devices and successfully confronted them with results found in the literature.