Analysis of High Performing Terahertz Quantum Cascade Lasers
arXiv:2208.09263 · doi:10.1103/PhysRevApplied.18.L041001
Abstract
Detailed simulations for Terahertz quantum cascade lasers based on two-well designs are presented. We reproduce the maximal operation temperatures observed and attribute the degradation with temperature to the occupation of parasitic levels and thermal backfilling. Furthermore, we demonstrate that the current injection can be conveniently studied by using EZ states, which combine energy selectivity and spatial localisation. Improving the injection allows to achieve higher maximal operation temperatures around 265 Kelvin.
arXiv comment5 pages, 6 figures included, accepted version, to appear in Physical Review Applied
References in corpus (8)
- Semiconductor Superlattices: A model system for nonlinear transport
- Thermoelectrically cooled THz quantum cascade laser operating up to 210 K
- Quantum transport: The link between standard approaches in superlattices
- Temperature dependence of the gain profile for THz quantum cascade lasers
- Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling
- Extraction-Controlled Quantum Cascade Lasers
- Nonequilibrium phonon effects in midinfrared quantum cascade lasers
- Simulating terahertz quantum cascade lasers: Trends from samples from different labs