Theory of delay-coupled nonidentical quantum cascade lasers

Andreas Herdt, Markus Weidmann, Till Mohr, Daan Lenstra, Wolfgang Elsäßer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)


It is shown that dynamics of delay-coupled quantum cascade lasers can be described in good approximation by the simpler set of rate equations for conventional interband diode lasers. A comparison of the steady-state solutions for locking shows excellent agreement with results obtained by time integrations of the full rate equations. The delay introduces an effective coupling phase equal to the product of operation frequency and delay time and the detuning width of the locking range is shown to periodically change when the delay time changes over an interval equal to half of the operation oscillation period.

Original languageEnglish
Title of host publicationSemiconductor Lasers and Laser Dynamics VIII
Number of pages14
ISBN (Electronic)9781510618909
Publication statusPublished - 1 Jan 2018
EventSemiconductor Lasers and Laser Dynamics VIII 2018 - Strasbourg, France
Duration: 23 Apr 201826 Apr 2018

Publication series

NameProceedings of SPIE


ConferenceSemiconductor Lasers and Laser Dynamics VIII 2018


  • Delay
  • Laser Dynamics
  • Nonlinear Dynamics
  • Quantum Cascade Laser
  • Rate Equation Model


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