Efficient coupling of electro-optical and heat-transport models for broad-area semiconductor lasers
- Radziunas, Mindaugas
- Fuhrmann, Jürgen
- Zeghuzi, Anissa
- Wünsche, Hans-Jürgen
- Koprucki, Thomas
- Brée, Carsten
- Wenzel, Hans
- Bandelow, Uwe
2010 Mathematics Subject Classification
- 65Z05 78A60 80A20, 78M12, 78M34, 65N08
2008 Physics and Astronomy Classification Scheme
- 42.55.Px 44.05.+e 02.30.Jr 02.60.Lj 02.70.Dh
- Broad area lasers, modeling, traveling wave, current spreading, heat transport, iterative coupling, different time scales, finite volumes, efficient implementation
In this work, we discuss the modeling of edge-emitting high-power broad-area semiconductor lasers. We demonstrate an efficient iterative coupling of a slow heat transport (HT) model defined on multiple vertical-lateral laser cross-sections with a fast dynamic electro-optical (EO) model determined on the longitudinal-lateral domain that is a projection of the device to the active region of the laser. Whereas the HT-solver calculates temperature and thermally-induced refractive index changes, the EO-solver exploits these distributions and provides time-averaged field intensities, quasi-Fermi potentials, and carrier densities. All these time-averaged distributions are used repetitively by the HT-solver for the generation of the heat sources entering the HT problem solved in the next iteration step.
- Opt. Quantum Electron., 51 (2019), published online on 22.02.2019, DOI 10.1007/s11082-019-1792-1 .