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Emission dynamics and optical gain of 1.3-μm (GaIn)(NAs)/GaAs lasers

  • Martin R. Hofmann
  • , Nils Gerhardt
  • , Anke M. Wagner
  • , C. Ellmers
  • , Falko Höhnsdorf
  • , Jörg Koch
  • , Wolfgang Stolz
  • , Stephan W. Koch
  • , Wolfgang W. Rühle
  • , J. Hader
  • , Jerome V. Moloney
  • , E. P. O'Reilly
  • , Bernd Borchert
  • , A. Y. Egorov
  • , Henning Riechert
  • , Hans Christian Schneider
  • , Weng W. Chow

Research output: Contribution to journalArticlepeer-review

Abstract

The ultrafast emission dynamics of a 1.3-μm (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser is studied by femtosecond luminescence upconversion. We obtain a minimum peak delay of 15.5 ps and a minimum pulse width of 10.5 ps. Laser operation with picosecond emission dynamics is demonstrated over a temperature range from 30 to 388 K. The bandgap shift with temperature of (GaIn)(NAs)/GaAs is determined to be about -2.9 · 10-4 eV/K, which is smaller than for GaAs. Our measurements of the optical gain provide gain spectra similar to those of commercial (GaIn)(PAs)/InP - structures at moderate densities but broaden considerably for elevated carrier densities due to the stronger carrier confinement. We compare our experimental results with gain spectra calculated from a microscopic model and confirm the predictive capability of the model. The theoretical gain spectra are used as the input for a calculation of the temperature dependence of the (GaIn)(NAs)/GaAs surface-emitter emission which results in very good agreement with experiment.

Original languageEnglish (US)
Pages (from-to)213-221
Number of pages9
JournalIEEE Journal of Quantum Electronics
Volume38
Issue number2
DOIs
StatePublished - Feb 2002

Keywords

  • Dynamics
  • Gain measurement
  • Modeling
  • Nitrogen compounds
  • Optical fiber communication
  • Optical spectroscopy
  • Quantum-well lasers
  • Semiconductor heterojunctions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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