Accepted articles

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Bound states in the continuum in photonic structures

 a, b,  a,  a,  a, b,  a
a ITMO University, Kronverksky Pr. 49, bldg. A, St. Petersburg, 197101, Russian Federation
b Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Mlls Road, Bldng 59, Canberra, 0200, Australia

Bound states in the continuum are an excellent example of how a solution to a simple problem of quantum mechanics, obtained about a century ago, can serve as an incentive to study the whole spectrum of resonance phenomena in wave physics. Due to the giant radiative lifetime, bound states in a continuum have found many applications in various fields of physics, in particular, in hydrodynamics, atomic physics, and acoustics. In this review, we present a broad view to the physics of bound states in the continuum and related effects, focusing primarily on photonic dielectric structures. We consider the history of the development of this direction, the main physical mechanisms of the formation of bound states in the continuum, specific examples of structures that can support such states. We also discuss their possible practical applications in optics, photonics, and radiophysics.

Keywords: bound states in the continuum, metasurface, resonator, Fano resonance, diffraction structures, nanophotonics
PACS: 42.25.Fx, 42.25.Bs, 42.79.Dj, 42.82.Et (all)
DOI: 10.3367/UFNe.2021.12.039120
Citation: Koshelev K L, Sadrieva Z F, Shcherbakov A A, Kivshar Yu S, Bogdanov A A "Bound states in the continuum in photonic structures" Phys. Usp., accepted

Received: 30th, August 2021, revised: 5th, December 2021, 6th, December 2021

Оригинал: Кошелев К Л, Садриева З Ф, Щербаков А А, Кившарь Ю С, Богданов А А «Связанные состояния непрерывного спектра в фотонных структурах» УФН, принята к публикации; DOI: 10.3367/UFNr.2021.12.039120

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