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

Franckié, M. LU ; Bosco, L. ; Beck, M. ; Bonzon, C. ; Mavrona, E. ; Scalari, G. ; Wacker, A. LU and Faist, J. (2018) In Applied Physics Letters 112(2).
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.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
112
issue
2
article number
021104
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85040509116
ISSN
0003-6951
DOI
10.1063/1.5004640
project
Quantum Cascade Lasers beyond general paradigms
language
English
LU publication?
yes
id
afc3a999-6a73-48f5-8f4c-ac865bde48d5
date added to LUP
2018-01-30 12:52:09
date last changed
2020-07-29 05:01:56
@article{afc3a999-6a73-48f5-8f4c-ac865bde48d5,
  abstract     = {<p>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 &gt; 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.</p>},
  author       = {Franckié, M. and Bosco, L. and Beck, M. and Bonzon, C. and Mavrona, E. and Scalari, G. and Wacker, A. and Faist, J.},
  issn         = {0003-6951},
  language     = {eng},
  month        = {01},
  number       = {2},
  publisher    = {American Institute of Physics (AIP)},
  series       = {Applied Physics Letters},
  title        = {Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling},
  url          = {https://lup.lub.lu.se/search/ws/files/38079484/apl2018franckie_accepted_manuscript.pdf},
  doi          = {10.1063/1.5004640},
  volume       = {112},
  year         = {2018},
}