Details
| Original language | English |
|---|---|
| Article number | 2100114 |
| Journal | Laser and Photonics Reviews |
| Volume | 15 |
| Issue number | 10 |
| Publication status | Published - 18 Oct 2021 |
Abstract
Modern nanophotonics has witnessed the rise of “electric anapoles” (EDAs), destructive interferences of electric and toroidal electric dipoles, actively exploited to resonantly decrease radiation from nanoresonators. However, the inherent duality in Maxwell equations suggests the intriguing possibility of “magnetic anapoles,” involving a nonradiating composition of a magnetic dipole and a magnetic toroidal dipole. Here, a hybrid anapole (HA) of mixed electric and magnetic character is predicted and observed experimentally via dark field spectroscopy, with all the dominant multipoles being suppressed by the toroidal terms in a nanocylinder. Breaking the spherical symmetry allows to overlap up to four anapoles stemming from different multipoles with just two tuning parameters. This effect is due to a symmetry-allowed connection between the resonator multipolar response and its eigenstates. The authors delve into the physics of such current configurations in the stationary and transient regimes and explore new ultrafast phenomena arising at sub-picosecond timescales, associated with the HA dynamics. The theoretical results allow the design of non-Huygens metasurfaces featuring a dual functionality: perfect transparency in the stationary regime and controllable ultrashort pulse beatings in the transient. Besides offering significant advantages with respect to EDAs, HAs can play an essential role in developing the emerging field of ultrafast resonant phenomena.
Keywords
- all-dielectric nanophotonics, dynamic toroidal moments, metasurfaces, nonradiating sources, ultrafast phenomena
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Laser and Photonics Reviews, Vol. 15, No. 10, 2100114, 18.10.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Theory, Observation, and Ultrafast Response of the Hybrid Anapole Regime in Light Scattering
AU - Canós Valero, Adrià
AU - Gurvitz, Egor A.
AU - Benimetskiy, Fedor A.
AU - Pidgayko, Dmitry A.
AU - Samusev, Anton
AU - Evlyukhin, Andrey B.
AU - Bobrovs, Vjaceslavs
AU - Redka, Dmitrii
AU - Tribelsky, Michael I.
AU - Rahmani, Mohsen
AU - Kamali, Khosro Zangeneh
AU - Pavlov, Alexander A.
AU - Miroshnichenko, Andrey E.
AU - Shalin, Alexander S.
N1 - Funding Information: The research reported in this publication was supported by the Russian Foundation for Basic Research (Project no. 20‐02‐00086, 20‐52‐00031) and the Moscow Engineering Physics Institute Academic Excellence Project (agreement with the Ministry of Education and Science of the Russian Federation of 27 August 2013, Project no. 02.a03.21.0005) for the modeling of the resonant light scattering and computer simulation. The contribution of the Russian Science Foundation for the time‐domain calculations (Project no. 21‐12‐00151) and the provision of user facilities (Project no. 19‐72‐30012) is also acknowledged. A.B.E. acknowledges the support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453). M.R. acknowledges support from the UK Research and Innovation Future Leaders Fellowship (MR/T040513/1).
PY - 2021/10/18
Y1 - 2021/10/18
N2 - Modern nanophotonics has witnessed the rise of “electric anapoles” (EDAs), destructive interferences of electric and toroidal electric dipoles, actively exploited to resonantly decrease radiation from nanoresonators. However, the inherent duality in Maxwell equations suggests the intriguing possibility of “magnetic anapoles,” involving a nonradiating composition of a magnetic dipole and a magnetic toroidal dipole. Here, a hybrid anapole (HA) of mixed electric and magnetic character is predicted and observed experimentally via dark field spectroscopy, with all the dominant multipoles being suppressed by the toroidal terms in a nanocylinder. Breaking the spherical symmetry allows to overlap up to four anapoles stemming from different multipoles with just two tuning parameters. This effect is due to a symmetry-allowed connection between the resonator multipolar response and its eigenstates. The authors delve into the physics of such current configurations in the stationary and transient regimes and explore new ultrafast phenomena arising at sub-picosecond timescales, associated with the HA dynamics. The theoretical results allow the design of non-Huygens metasurfaces featuring a dual functionality: perfect transparency in the stationary regime and controllable ultrashort pulse beatings in the transient. Besides offering significant advantages with respect to EDAs, HAs can play an essential role in developing the emerging field of ultrafast resonant phenomena.
AB - Modern nanophotonics has witnessed the rise of “electric anapoles” (EDAs), destructive interferences of electric and toroidal electric dipoles, actively exploited to resonantly decrease radiation from nanoresonators. However, the inherent duality in Maxwell equations suggests the intriguing possibility of “magnetic anapoles,” involving a nonradiating composition of a magnetic dipole and a magnetic toroidal dipole. Here, a hybrid anapole (HA) of mixed electric and magnetic character is predicted and observed experimentally via dark field spectroscopy, with all the dominant multipoles being suppressed by the toroidal terms in a nanocylinder. Breaking the spherical symmetry allows to overlap up to four anapoles stemming from different multipoles with just two tuning parameters. This effect is due to a symmetry-allowed connection between the resonator multipolar response and its eigenstates. The authors delve into the physics of such current configurations in the stationary and transient regimes and explore new ultrafast phenomena arising at sub-picosecond timescales, associated with the HA dynamics. The theoretical results allow the design of non-Huygens metasurfaces featuring a dual functionality: perfect transparency in the stationary regime and controllable ultrashort pulse beatings in the transient. Besides offering significant advantages with respect to EDAs, HAs can play an essential role in developing the emerging field of ultrafast resonant phenomena.
KW - all-dielectric nanophotonics
KW - dynamic toroidal moments
KW - metasurfaces
KW - nonradiating sources
KW - ultrafast phenomena
UR - http://www.scopus.com/inward/record.url?scp=85111671587&partnerID=8YFLogxK
U2 - 10.1002/lpor.202100114
DO - 10.1002/lpor.202100114
M3 - Article
AN - SCOPUS:85111671587
VL - 15
JO - Laser and Photonics Reviews
JF - Laser and Photonics Reviews
SN - 1863-8880
IS - 10
M1 - 2100114
ER -