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Charge Transport in Interband Cascade Lasers: An Ab-Initio Self-Consistent Model by Windischhofer, Andreas; Opačak, Nikola; Schwarz, Benedikt is a scholarly article available to read on EtoBox.

What is Charge Transport in Interband Cascade Lasers: An Ab-Initio Self-Consistent Model about?

Interband cascade lasers (ICLs) stand out due to their low threshold current and minimal power consumption, rendering them viable sources for compact and mobile devices in the mid-infrared. Since their first demonstration, they experienced major performance improvements. Many of them originate, on one hand, from technological enhancements and, on the other hand, also from restricted numerical analysis. Encouraged by the impact of restricted models, an ICL-specific simulation tool can lead to performance breakthroughs and a better comprehension of governing mechanisms. Drawing from an evaluation of existing tools designed for quantum cascade structures, we implemented a self-consistent density matrix rate equation model generalized to simulate the transport in both conduction and valence band heterostructures. Albeit the extensive inclusion of the quantum effects, special care was taken to maintain a high numerical efficiency. Our charge transport model additionally considers optical field calculations, allowing for predictive calculations of light-current-voltage (LIV) curves. We benchmark the model against well-established ICL designs and demonstrate reliable performance predictab

Author

Windischhofer, Andreas; Opačak, Nikola; Schwarz, Benedikt

Published

2024

Language

EN