Efficient coupling of heat-flow and electro-optical models for simulation of dynamics in high-power broad-area semiconductor lasers
M. Radziunas1, J. Fuhrmann1, A. Zeghuzi2, H.-J Wünsche1,2, Th. Koprucki1, H. Wenzel2 and U. Bandelow1
Published in:
18th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2018), Hong Kong, China, Nov. 5-9, pp. 91-92 (2018).
Abstract:
The aim of the work presented here is an efficient coupling of a heat flow (HF) model defined on multiple vertical-lateral subdomains and a dynamic electro-optical (EO) model acting in the longitudinal-lateral plane. Due to the different time scales, we propose an iterative coupling of the dynamic EO and static HF models. HF-solver calculates temperature and thermally-induced refractive index change within the active region. The EO-solver exploits these distributions and provides time-averaged field intensities, quasi-Fermi potentials, carrier densities, and bias current. All these time-averaged distributions are used again by the HF-solver for generation of the heat source.
1 Weierstrass Institute, Mohrenstrasse 39, 10117 Berlin, Germany
2 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
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