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Comparative analysis of quantum cascade laser modeling based on density matrices and non-equilibrium Green's functions

Franckie, Martin LU ; Wolf, J. M.; Trinite, V.; Liverini, V.; Faist, J.; Maisons, G.; Carras, M.; Aidam, R.; Ostendorf, R. and Wacker, Andreas LU (2014) In Applied Physics Letters 105(10).
Abstract
We study the operation of an 8.5 mu m quantum cascade laser based on GaInAs/AlInAs lattice matched to InP using three different simulation models based on density matrix (DM) and non-equilibrium Green's function (NEGF) formulations. The latter advanced scheme serves as a validation for the simpler DM schemes and, at the same time, provides additional insight, such as the temperatures of the sub-band carrier distributions. We find that for the particular quantum cascade laser studied here, the behavior is well described by simple quantum mechanical estimates based on Fermi's golden rule. As a consequence, the DM model, which includes second order currents, agrees well with the NEGF results. Both these simulations are in accordance with... (More)
We study the operation of an 8.5 mu m quantum cascade laser based on GaInAs/AlInAs lattice matched to InP using three different simulation models based on density matrix (DM) and non-equilibrium Green's function (NEGF) formulations. The latter advanced scheme serves as a validation for the simpler DM schemes and, at the same time, provides additional insight, such as the temperatures of the sub-band carrier distributions. We find that for the particular quantum cascade laser studied here, the behavior is well described by simple quantum mechanical estimates based on Fermi's golden rule. As a consequence, the DM model, which includes second order currents, agrees well with the NEGF results. Both these simulations are in accordance with previously reported data and a second regrown device. (C) 2014 AIP Publishing LLC. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
105
issue
10
publisher
American Institute of Physics
external identifiers
  • wos:000342758700065
  • scopus:84907092759
ISSN
0003-6951
DOI
10.1063/1.4895123
language
English
LU publication?
yes
id
02cd4bc9-530a-49ed-b8b7-38144ea1cf85 (old id 4803542)
date added to LUP
2014-11-28 14:03:06
date last changed
2017-10-22 03:05:01
@article{02cd4bc9-530a-49ed-b8b7-38144ea1cf85,
  abstract     = {We study the operation of an 8.5 mu m quantum cascade laser based on GaInAs/AlInAs lattice matched to InP using three different simulation models based on density matrix (DM) and non-equilibrium Green's function (NEGF) formulations. The latter advanced scheme serves as a validation for the simpler DM schemes and, at the same time, provides additional insight, such as the temperatures of the sub-band carrier distributions. We find that for the particular quantum cascade laser studied here, the behavior is well described by simple quantum mechanical estimates based on Fermi's golden rule. As a consequence, the DM model, which includes second order currents, agrees well with the NEGF results. Both these simulations are in accordance with previously reported data and a second regrown device. (C) 2014 AIP Publishing LLC.},
  articleno    = {103106},
  author       = {Franckie, Martin and Wolf, J. M. and Trinite, V. and Liverini, V. and Faist, J. and Maisons, G. and Carras, M. and Aidam, R. and Ostendorf, R. and Wacker, Andreas},
  issn         = {0003-6951},
  language     = {eng},
  number       = {10},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Letters},
  title        = {Comparative analysis of quantum cascade laser modeling based on density matrices and non-equilibrium Green's functions},
  url          = {http://dx.doi.org/10.1063/1.4895123},
  volume       = {105},
  year         = {2014},
}