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https://open.uns.ac.rs/handle/123456789/13043
Title: | PT-symmetric cladding layers for high-q brewster modes and embedded eigenstates | Authors: | Šakotić, Žarko Krasnok, Alex Cselyuszka, Norbert Janković, Nikolina Alú, Andrea |
Issue Date: | Sep-2019 | Conference: | 13th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2019 | Abstract: | © 2019 IEEE. Epsilon near-zero (ENZ) materials have been raising significant interest in various research areas. Rich concepts such as photonic doping and supercoupling featuring ENZ materials have been reported. ENZ materials have been proven to be instrumental to achieve embedded eigenstates, or self-sustained electromagnetic resonances in open structures with momentum compatible with the radiation continuum. However, unavoidable absorption in realistic ENZ materials results in a finite lifetime of these modes, and decay to radiation. Here, we present a strategy to tackle the losses of ENZ materials in order to produce unbounded high-Q resonances with the use of PT-symmetry and the concept of suppressed leakage. These results pave the way to efficient light trapping and sensing applications with realistic ENZ materials. | URI: | https://open.uns.ac.rs/handle/123456789/13043 | DOI: | 10.1109/MetaMaterials.2019.8900850 |
Appears in Collections: | IBS Publikacije/Publications |
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