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Oleg Zaitsev1, Lev Deych, Vladimir Shuvayev

  • 1Fachbereich Physik, Universität Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg, Germany. oleg.zaitsev@uni-duisburg-essen.de

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Summary
This summary is machine-generated.

This study numerically investigates a disordered superlattice laser, finding that spatial hole burning limits lasing modes and causes nonmonotonic intensity changes with increased pumping.

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Area of Science:

  • Laser physics
  • Condensed matter physics
  • Statistical mechanics

Background:

  • Understanding laser dynamics in complex structures is crucial.
  • Disordered superlattices present unique optical properties.
  • Open systems introduce additional factors influencing laser behavior.

Purpose of the Study:

  • To numerically analyze the statistical properties of a one-dimensional disordered superlattice laser.
  • To investigate the impact of spatial hole burning on mode competition and intensity.
  • To compare numerical findings with experimental observations.

Main Methods:

  • Numerical simulation of a one-dimensional disordered superlattice laser.
  • Determination of passive normal modes using the Feshbach projection technique.
  • Analysis of mode competition, spectral spacing, and intensity statistics.

Main Results:

  • Mode competition due to spatial hole burning saturates the number of lasing modes as pump rate increases.
  • Spatial hole burning causes nonmonotonic dependence of lasing mode intensities on pumping.
  • Computed spectral spacing and intensity statistics qualitatively agree with experimental data.

Conclusions:

  • Spatial hole burning is a key factor governing mode behavior in this laser system.
  • The numerical model provides a valid framework for understanding experimental results.
  • Further research can explore more complex disordered laser systems.