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Characterization of intersubband devices combining a nonequilibrium many body theory with transmission spectroscopy experiments

  • M. F. PereiraJr
  • R. Nelander
  • A. Wacker
  • D. G. Revin
  • M. R. Soulby
  • L. R. Wilson
  • J. W. Cockburn
  • A. B. Krysa
  • J. S. Roberts
  • R. J. Airey
Article

Abstract

In this paper we apply a microscopic nonequilibrium many body Keldysh Green′s functions approach to an analysis of complex intersubband optical materials and devices. The calculated absorption/gain spectra are in very good agreement with transmission spectroscopy measurements of quantum cascade laser structures operating in the mid-infrared (midIR). The very good agreement reached between theoretical results and experimental measurements benchmarks the predictive power of our algorithms and its potential as a design tool for efficient intersubband designs.

Keywords

Quantum Cascade Laser Intersubband Transition Cancellation Effect Quantum Cascade Laser Structure Nonequilibrium Green Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors acknowledge the financial support provided by the Swedish Research Council, the EU FP6 Grant No. STRP 505642 “ANSWER” and Grant No. MRTN-CT-2004–51240 “POISE”.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • M. F. PereiraJr
    • 1
  • R. Nelander
    • 2
  • A. Wacker
    • 2
  • D. G. Revin
    • 3
  • M. R. Soulby
    • 3
  • L. R. Wilson
    • 3
  • J. W. Cockburn
    • 3
  • A. B. Krysa
    • 4
  • J. S. Roberts
    • 4
  • R. J. Airey
    • 4
  1. 1.Materials and Engineering Research InstituteSheffield Hallam UniversitySheffieldUK
  2. 2.Department of PhysicsUniversity of LundLundSweden
  3. 3.Department of Physics and AstronomyUniversity of SheffieldSheffieldUK
  4. 4.EPSRC National Centre for III–V TechnologiesUniversity of SheffieldSheffieldUK

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