Numerical investigations on a photonic nanojet coupled plasmonic system for photonic applications

Autor:	Tulika Agrawal, Soumyodeep Dey, Shubhayan Bhattacharya, Gurvinder Singh, Prem B Bisht
Rok vydání:	2022
Předmět:	Physics::Optics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Zdroj:	Journal of Optics. 24:044008
ISSN:	2040-8986 2040-8978
Popis:	A photonic nanojet (PNJ) from a microcavity is a narrow and intense beam of light used to enhance the emerging electric field. Metal nanoparticles (NPs), on the other hand, confine a strong field in their vicinity due to the resonance of the free electrons with the incident field. A hybrid combination of a microcavity with a NP can drastically enhance the output field. In this work, a systematic numerical study of the microcavity-NP system has been carried out to investigate the effect of the shape of the metal NPs on the output field strength. The single and their dimer NPs with different dimer nanogaps with PNJ producing microcavity have been investigated. Splitting of the broad dipole mode of the NP has also been observed. As an application of this study, the surface enhanced Raman spectroscopy factor of the order of 107 has been estimated for nano-cube dimer NP-microcavity hybrid system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f14086bf236714e87049fccc8b3f93a https://doi.org/10.1088/2040-8986/ac4d73 Zobrazit plný text záznamu