Fano-resonant mechanism of terajet formation using graphene-covered high-index mesoscale spheres; Optics Letters; Vol. 49, iss. 18

Fano-resonant mechanism of terajet formation using graphene-covered high-index mesoscale spheres; Optics Letters; Vol. 49, iss. 18

Dettagli Bibliografici
Parent link:	Optics Letters.— .— Washington: Optical Society of America Vol. 49, iss. 18.— 2024.— P. 5175-5178
Altri autori:	Paddubskaya A. G., Novitsky A. V. Andrey Vasiljevich, Minin O. V. Oleg Vladilenovich, Minin I. V. Igor Vladilenovich
Riassunto:	Title screen Photonic jet in terahertz (THz) frequency range (terajet) plays an important role in modern THz scanning systems to achieve a superresolution beyond the diffraction limit. Based on analytical simulations, we introduce a synergetic effect of a mesoscale dielectric sphere and graphene to improve the focusing properties of a particle. We show that a graphene-covered dielectric sphere is able to enhance the field behind it if the refractive index is high. This conflicts with a generally accepted statement that a jet is generated only for low-index dielectrics with n < 2. We demonstrate the tunability of the terajet characteristics with respect to the graphene Fermi energy and discover a Fano resonance causing the field increase. This design leverages the tuning properties of the graphene allowing dynamic control over the power and size of the generated terajet in real time. With high-index materials, we get the opportunity for integration of terajet-assisted imaging with semiconductor technology Текстовый файл AM_Agreement
Lingua:	inglese
Pubblicazione:	2024
Soggetti:	электронный ресурс труды учёных ТПУ photonic jet graphene
Accesso online:	https://opg.optica.org/ol/abstract.cfm?URI=ol-49-18-5175
Natura:	Elettronico Capitolo di libro
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678267

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