Advanced

A phonon scattering assisted injection and extraction based terahertz quantum cascade laser

Dupont, E.; Fathololoumi, S.; Wasilewski, Z. R.; Aers, G.; Laframboise, S. R.; Franckie, Martin LU ; Razavipour, S. G.; Wacker, Andreas LU ; Ban, D. and Liu, H. C. (2012) In Applied Physics Reviews 111(7).
Abstract
A lasing scheme for terahertz quantum cascade lasers, based on consecutive phonon-photon-phonon emissions per module, is proposed and experimentally demonstrated. The charge transport of the proposed structure is modeled using a rate equation formalism. An optimization code based on a genetic algorithm was developed to find a four-well design in the GaAs/Al0.25Ga0.75As material system that maximizes the product of population inversion and oscillator strength at 150 K. The fabricated devices using Au double-metal waveguides show lasing at 3.2 THz up to 138 K. The electrical characteristics display no sign of differential resistance drop at lasing threshold, which, in conjunction with the low optical power of the device, suggest-thanks to... (More)
A lasing scheme for terahertz quantum cascade lasers, based on consecutive phonon-photon-phonon emissions per module, is proposed and experimentally demonstrated. The charge transport of the proposed structure is modeled using a rate equation formalism. An optimization code based on a genetic algorithm was developed to find a four-well design in the GaAs/Al0.25Ga0.75As material system that maximizes the product of population inversion and oscillator strength at 150 K. The fabricated devices using Au double-metal waveguides show lasing at 3.2 THz up to 138 K. The electrical characteristics display no sign of differential resistance drop at lasing threshold, which, in conjunction with the low optical power of the device, suggest-thanks to the rate equation model-a slow depopulation rate of the lower lasing state, a hypothesis confirmed by non-equilibrium Green's function calculations. [http://dx.doi.org/10.1063/1.3702571] (Less)
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 Reviews
volume
111
issue
7
publisher
American Institute of Physics
external identifiers
  • wos:000303282402051
  • scopus:84861723780
ISSN
0021-8979
DOI
10.1063/1.3702571
language
English
LU publication?
yes
id
00be150d-bf1c-4b62-b5ac-0f906d331d9f (old id 2819404)
date added to LUP
2012-06-21 13:49:49
date last changed
2017-11-05 03:21:36
@article{00be150d-bf1c-4b62-b5ac-0f906d331d9f,
  abstract     = {A lasing scheme for terahertz quantum cascade lasers, based on consecutive phonon-photon-phonon emissions per module, is proposed and experimentally demonstrated. The charge transport of the proposed structure is modeled using a rate equation formalism. An optimization code based on a genetic algorithm was developed to find a four-well design in the GaAs/Al0.25Ga0.75As material system that maximizes the product of population inversion and oscillator strength at 150 K. The fabricated devices using Au double-metal waveguides show lasing at 3.2 THz up to 138 K. The electrical characteristics display no sign of differential resistance drop at lasing threshold, which, in conjunction with the low optical power of the device, suggest-thanks to the rate equation model-a slow depopulation rate of the lower lasing state, a hypothesis confirmed by non-equilibrium Green's function calculations. [http://dx.doi.org/10.1063/1.3702571]},
  articleno    = {73111},
  author       = {Dupont, E. and Fathololoumi, S. and Wasilewski, Z. R. and Aers, G. and Laframboise, S. R. and Franckie, Martin and Razavipour, S. G. and Wacker, Andreas and Ban, D. and Liu, H. C.},
  issn         = {0021-8979},
  language     = {eng},
  number       = {7},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Reviews},
  title        = {A phonon scattering assisted injection and extraction based terahertz quantum cascade laser},
  url          = {http://dx.doi.org/10.1063/1.3702571},
  volume       = {111},
  year         = {2012},
}