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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2023, Volume 117, Issue 7, Pages 498–503
DOI: https://doi.org/10.31857/S1234567823070030
(Mi jetpl6905)
 

OPTICS AND NUCLEAR PHYSICS

High-quality infrared metalenses based on germanium dimers

V. M. Pustynnikova, A. I. Musorin, A. A. Fedyanin

Faculty of Physics, Moscow State University, Moscow, 119991 Russia
References:
Abstract: Modern methods of nanophotonics allow creating miniature devices that change the direction of light propagation, modulate the phase front, and control the outcoming state of the polarization. One of the promising areas of research is the development of flat optics elements based on planar analogues of metamaterials—dielectric metasurfaces, which are two-dimensional arrays of subwavelength nanoparticles with a high refractive index and low absorption coefficient. However, the resonances of such nanoscatterers have usually a low quality factor. Symmetry breaking of particle can lead to the excitation of a high-$Q$ quasi-bound states in the continuum. In this work, we numerically study infrared metasurfaces that support such resonances and are formed by dimers of germanium nanocuboids. The possibility of focusing radiation to a point and line by 300-nm-thick spherical and cylindrical metalenses is shown.
Funding agency Grant number
Russian Foundation for Basic Research 21-52-12036
Foundation for the Development of Theoretical Physics and Mathematics BASIS 22-1-3-5-1
This work was carried out within the framework of the Development Program of the Moscow State University (interdisciplinary scientific and educational school “Photonic and Quantum Technologies. Digital Medicine”) and was supported by the Russian Foundation for Basic Research (project no. 21-52-12036, numerical calculation of focusing) and by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS (project no. 22-1-3-5-1, calculation of the amplitude-frequency and phase-frequency characteristics of meta-atoms).
Received: 22.02.2023
Revised: 23.02.2023
Accepted: 02.03.2023
English version:
Journal of Experimental and Theoretical Physics Letters, 2023, Volume 117, Issue 7, Pages 498–503
DOI: https://doi.org/10.1134/S0021364023600556
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: V. M. Pustynnikova, A. I. Musorin, A. A. Fedyanin, “High-quality infrared metalenses based on germanium dimers”, Pis'ma v Zh. Èksper. Teoret. Fiz., 117:7 (2023), 498–503; JETP Letters, 117:7 (2023), 498–503
Citation in format AMSBIB
\Bibitem{PusMusFed23}
\by V.~M.~Pustynnikova, A.~I.~Musorin, A.~A.~Fedyanin
\paper High-quality infrared metalenses based on germanium dimers
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2023
\vol 117
\issue 7
\pages 498--503
\mathnet{http://mi.mathnet.ru/jetpl6905}
\crossref{https://doi.org/10.31857/S1234567823070030}
\edn{https://elibrary.ru/jhtaio}
\transl
\jour JETP Letters
\yr 2023
\vol 117
\issue 7
\pages 498--503
\crossref{https://doi.org/10.1134/S0021364023600556}
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