Non-Hermitian skin effect and lasing of absorbing open-boundary modes in photonic crystals

  title={Non-Hermitian skin effect and lasing of absorbing open-boundary modes in photonic crystals},
  author={Tetsuyuki Ochiai},
  journal={Physical Review B},
  • T. Ochiai
  • Published 1 September 2022
  • Physics
  • Physical Review B
We explore absorbing open-boundary modes in non-Hermitian photonic systems. The modes have a continuum spectrum in the infinite-system-size limit and can exhibit the non-Hermitian skin effect. In contrast to the conventional non-Hermitian skin modes under the fixed-end open-boundary condition, the modes concerned exhibit a strongly size-dependent spectrum that gradually converges to the non-Bloch-band dispersion. The modes correspond to the poles of the S matrix, and are closely related to the… 

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