Presence of temporal dynamical instabilities in topological insulator lasers

  title={Presence of temporal dynamical instabilities in topological insulator lasers},
  author={Stefano Longhi and Yannis Kominis and Vassilios Kovanis},
  journal={Europhysics Letters},
Topological insulator lasers are a newly introduced kind of lasers in which light snakes around a cavity without scattering. Like for an electron current in a topological insulator material, a topologically protected lasing mode travels along the cavity edge, steering neatly around corners and imperfections without scattering or leaking out. In a recent experiment, topological insulator lasers have been demonstrated using a square lattice of coupled semiconductor microring resonators with a… 

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