Presence of temporal dynamical instabilities in topological insulator lasers

@article{Longhi2018PresenceOT,
  title={Presence of temporal dynamical instabilities in topological insulator lasers},
  author={Stefano Longhi and Yannis Kominis and Vassilios Kovanis},
  journal={Europhysics Letters},
  year={2018},
  volume={122}
}
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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References

SHOWING 1-7 OF 7 REFERENCES

Lasing in topological edge states of a one-dimensional lattice

Topology describes properties that remain unaffected by smooth distortions. Its main hallmark is the emergence of edge states localized at the boundary between regions characterized by distinct…

Topological Phases of Non-Hermitian Systems

Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian Hamiltonians in open classical and quantum systems. A particular…

Non‐Hermitian Gauged Topological Laser Arrays

Stable and phase‐locked emission in an extended topological supermode of coupled laser arrays, based on concepts of non‐Hermitian and topological photonics, is theoretically suggested. A…

Edge-Mode Lasing in 1D Topological Active Arrays.

The experimental and theoretical results demonstrate that, in the presence of chiral-time symmetry, this non-Hermitian topological structure can experience phase transitions that are dictated by a complex geometric phase.

Topologically robust transport of photons in a synthetic gauge field.

This work implements a synthetic gauge field for photons using silicon-on-insulator technology and determines the distribution of transport properties, confirming that waves are localized in the bulk and localization is suppressed in edge states.

Period-doubling cascades and chaos in a semiconductor laser with optical injection.

Phase-locked array of quantum cascade lasers with an integrated Talbot cavity.

A phase-locked array of three quantum cascade lasers with an integrated Talbot cavity at one side of the laser array with in-phase mode operation shows great modal stability under different injection currents, from the threshold current to the full power current.