Self-adjustment of a nonlinear lasing mode to a pumped area in a two-dimensional microcavity [invited]

Yuta Kawashima, Susumu Shinohara, Satoshi Sunada, Takahisa Harayama

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    Abstract

    We numerically performed wave dynamical simulations based on the Maxwell–Bloch (MB) model for a quadrupole-deformed microcavity laser with spatially selective pumping. We demonstrate the appearance of an asymmetric lasing mode whose spatial pattern violates both the x- and y-axes mirror symmetries of the cavity. Dynamical simulations revealed that a lasing mode consisting of a clockwise or counterclockwise rotating-wave component is a stable stationary solution of the MB model. From the results of a passive-cavity mode analysis, we interpret these asymmetric rotating-wave lasing modes by the locking of four nearly degenerate passive-cavity modes. For comparison, we carried out simulations for a uniform pumping case and found a different locking rule for the nearly degenerate modes. Our results demonstrate a nonlinear dynamical mechanism for the formation of a lasing mode that adjusts its pattern to a pumped area.

    Original languageEnglish
    Article number2327-9125/17/060B47-07
    Pages (from-to)B47-B53
    JournalPhotonics Research
    Volume5
    Issue number6
    DOIs
    Publication statusPublished - 2017 Dec 1

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    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

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