Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling

FranckiƩ, M.; Bosco, L.; Beck, M.; Bonzon, C., et al. (2018-01-08). Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling. Applied Physics Letters, 112, (2)
Download:
DOI:
| Published | English
Authors:
FranckiƩ, M. ; Bosco, L. ; Beck, M. ; Bonzon, C. , et al.
Department:
Mathematical Physics
NanoLund: Centre for Nanoscience
Project:
Quantum Cascade Lasers beyond general paradigms
Abstract:

We present a two-quantum well THz intersubband laser operating up to 192 K. The structure has been optimized using non-equilibrium Green's function model. The result of this optimization was confirmed experimentally by growing, processing, and measuring a number of proposed designs. At high temperature (T > 200 K), the simulations indicate that lasing fails due to a combination of electron-electron scattering, thermal backfilling, and, most importantly, re-absorption coming from broadened states.

ISSN:
0003-6951
LUP-ID:
afc3a999-6a73-48f5-8f4c-ac865bde48d5 | Link: https://lup.lub.lu.se/record/afc3a999-6a73-48f5-8f4c-ac865bde48d5 | Statistics

Cite this