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Impact of Doping Density in Short-Wavelength InP-Based Strain-Compensated Quantum-Cascade Lasers

  • E. Mujagić
  • M. Austerer
  • S. Schartner
  • M. Nobile
  • P. Klang
  • L. Hoffmann
  • W. Schrenk
  • I. Bayrakli
  • M. P. Semtsiv
  • W. T. Masselink
  • G. Strasser
Part of the Springer Proceedings in Physics book series (SPPHY, volume 119)

Abstract

The authors present the effect of injector doping concentrations between 0.7 × 1016 cm−3 and 3.9 × 1017 cm−3 on the performance of short-wavelength InP-based quantum-cascades lasers (QCL) emitting around 3.8 μm. For the maximum operation current an almost linear dependence on the doping is obtained. However, the maximum emitted optical power, the highest wall-plug efficiency as well as the maximum operating temperature are found for a doping density of 1.7 × 1017 cm−3. Characterization of the lowest doped sample indicated an unstable operation of the QCLs.

Keywords

Optical Power Quantum Cascade Laser Doping Density Maximum Operation Heat Sink Temperature 
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.

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References

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    J. Faist, F. Capasso, D. L. Sivco, A. L. Hutchinson, S. N. G. Chu and A. Y. Cho, “Short-wavelength (λ≈3.4 μm) quantum cascade laser based on strained compensated InGaAs/AlInAs”, App. Phys. Lett., 72, 680–682 (1997)CrossRefADSGoogle Scholar
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    T. Aellen, M. Beck, N. Hoyler, M. Giovannini, J. Faist, and E. Gini, “Doping in quantum cascade lasers. I. InAlAs-InGaAs/InP midinfrared devices”, App. Phys. Lett., 100, 043101 (2006) and references thereinGoogle Scholar
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    M. P. Semtsiv, M. Ziegler, S. Dressier and W. T. Masselink, “Above room temperature operation of short wavelength (λ=3.8 μm) strain-compensated In0.73Ga0.27 As-AlAs quantum cascade lasers”, App. Phys. Lett., 85, 1478–1480 (2004)CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media B.V 2008

Authors and Affiliations

  • E. Mujagić
    • 1
  • M. Austerer
    • 1
  • S. Schartner
    • 1
  • M. Nobile
    • 1
  • P. Klang
    • 1
  • L. Hoffmann
    • 1
  • W. Schrenk
    • 1
  • I. Bayrakli
    • 2
  • M. P. Semtsiv
    • 2
  • W. T. Masselink
    • 2
  • G. Strasser
    • 1
  1. 1.Center for Micro- and NanostructuresTU WienViennaAustria
  2. 2.Department of PhysicsHumboldt University BerlinBerlinGermany

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