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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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.

Detaljer

Författare
  • Martin Franckie
  • J. M. Wolf
  • V. Trinite
  • V. Liverini
  • J. Faist
  • G. Maisons
  • M. Carras
  • R. Aidam
  • R. Ostendorf
  • Andreas Wacker
Enheter & grupper
Externa organisationer
  • ETH Zürich
  • G.I.E III-V Lab, France
  • Fraunhofer Institute for Applied Solid State Physics
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
Originalspråkengelska
Artikelnummer103106
TidskriftApplied Physics Letters
Volym105
Utgåva nummer10
StatusPublished - 2014
PublikationskategoriForskning
Peer review utfördJa

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Martin Franckie

2012/05/202016/05/13

Projekt: AvhandlingIndividuellt forskningsprojekt

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