Non-equilibrium dynamics in the dual-wavelength operation of vertical external-cavity surface-emitting lasers

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Microscopic many-body theory coupled with Maxwell's equation is used to study dual-wavelength operation in vertical external-cavity surface-emitting lasers. The intrinsically dynamic nature of coexisting emission wavelengths in semiconductor lasers is associated with characteristic non-equilibrium carrier dynamics, which causes significant deformations of the quasi-equilibrium gain and carrier inversion. Extended numerical simulations are employed to efficiently investigate the parameter space to identify the regime for dual-wavelength operation. Using a frequency selective intracavity etalon, two families of modes are stabilized with dynamical interchange of the strongest emission peaks. For this operation mode, anti-correlated intensity noise is observed in agreement with the experiment. A method using effective frequency selective filtering is suggested for stabilization of genuine dual-wavelength output.

Original languageEnglish (US)
Pages (from-to)5368-5382
Number of pages15
JournalOptics Express
Issue number4
StatePublished - Jan 1 2019


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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