Exceptional points of third-order in a layered optical microdisk cavity

A striking signature of the non-Hermitian physics in open systems is the existence of exceptional points (EPs) in parameter space. In contrast to a conventional degeneracy, an EP involves not only the coalescence of the eigenvalues but simultaneously that of the corresponding eigenstates as well. He...

Full description

Saved in:
Bibliographic Details
Published in:New journal of physics 2018-08, Vol.20 (8), p.83016
Main Authors: Kullig, Julius, Yi, Chang-Hwan, Hentschel, Martina, Wiersig, Jan
Format: Article
Language:English
Subjects:
Coalescing
dielectric cavity
Eigenvalues
Eigenvectors
exceptional points
Holes
microcavity
non-Hermitian physics
Open systems
optical modes
Physics
Refractivity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A striking signature of the non-Hermitian physics in open systems is the existence of exceptional points (EPs) in parameter space. In contrast to a conventional degeneracy, an EP involves not only the coalescence of the eigenvalues but simultaneously that of the corresponding eigenstates as well. Here, we study EPs in optical microdisk cavities with a concentrically layered refractive index profile. For the double-layered cavity we show the existence of an EP with two coalescing modes. For a triple-layered cavity we verify and discuss the emergence of an EP involving three coalescing modes in a single microdisk cavity.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/aad594