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arXiv · 2107.13719

Exceptional points in dielectric spheroid

Evgeny Bulgakov·Konstantin Pichugin·Almas Sadreev
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Abstract

Evolution of resonant frequencies and resonant modes as dependent on the aspect ratio is considered in a dielectric high index spheroid. Because of rotational symmetry of the spheroid the solutions are separated by the azimuthal index $m$. By the two-fold variation of a refractive index and the aspect ratio we achieve exceptional points (EPs) at which the resonant frequencies and resonant modes are coalesced in the sectors $m=0$ for both TE and TM polarizations and $m=1$.

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Evgeny Bulgakov, Konstantin Pichugin, Almas Sadreev. 2021-07-29. Exceptional points in dielectric spheroid. https://doi.org/10.1103/physreva.104.053507

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