Second Harmonic Emission From Dielectric Nanoresonators in the Absorption Regime

Autor:	Andrea Tognazzi, Paolo Franceschini, Davide Rocco, Luca Carletti, Andrea Locatelli, Marco Gandolfi, Dario Zappa, Alfonso Carmelo Cino, Elisabetta Comini, Giuseppe Leo, Costantino De Angelis
Přispěvatelé:	Tognazzi, Andrea, Franceschini, Paolo, Rocco, Davide, Carletti, Luca, Locatelli, Andrea, Gandolfi, Marco, Zappa, Dario, Cino, Alfonso Carmelo, Comini, Elisabetta, Leo, Giuseppe, De Angelis, Costantino
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	nanoresonator Settore ING-INF/02 - Campi Elettromagnetici Second harmonic generation Electrical and Electronic Engineering dielectric absorption Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Popis:	We study second harmonic generation in dielectric nanocylinders as a function of the wavelength of the incident field and geometrical dimensions. Uncommonly, we consider a spectral range in which the emitted nonlinear signal is partially absorbed by the dielectric. Surprisingly, we reveal that the second harmonic efficiency does not decrease as the imaginary part of the complex dielectric refractive index increases. Indeed, the presence of higher order multipoles supported by the resonators at the fundamental wavelength can significantly boost the generated second harmonic signal even in the dielectric absorption spectral region achieving nonlinear efficiency of the same order of magnitude with respect to the lossless case.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9228a8486bc53fcc4bb46cc7836ea68c https://hdl.handle.net/10447/585790 Zobrazit plný text záznamu