We analyze the optical scattering properties of an array of Au nano-cylinders fabricated upon an ion-exchanged waveguide. The integrated systems is considered for fluoroscopy and Raman spectroscopy. Absorption, scattering and extinction have been calculated through a combination of Finite Difference Time Domain (FDTD) method and scattering theory. While a portion of the excitation signal interacts with the array, the remaining part flows through the waveguide, enabling areas within the simulation box that complicate the calculation through standard procedures. Our analysis includes adjustments and approximations addressing this issue and making full use of computational capabilities of FDTD.

Optical properties of a waveguide-fed plasmonic nano-array through approximated scattering theory / Alam, Badrul; Ferraro, Antonio; D'Alessandro, Antonio; Caputo, Roberto; Asquini, Rita. - (2021), pp. 23-24. ((Intervento presentato al convegno 21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 tenutosi a Torino [10.1109/NUSOD52207.2021.9541521].

Optical properties of a waveguide-fed plasmonic nano-array through approximated scattering theory

Alam, Badrul;d'Alessandro, Antonio;Asquini, Rita
2021

Abstract

We analyze the optical scattering properties of an array of Au nano-cylinders fabricated upon an ion-exchanged waveguide. The integrated systems is considered for fluoroscopy and Raman spectroscopy. Absorption, scattering and extinction have been calculated through a combination of Finite Difference Time Domain (FDTD) method and scattering theory. While a portion of the excitation signal interacts with the array, the remaining part flows through the waveguide, enabling areas within the simulation box that complicate the calculation through standard procedures. Our analysis includes adjustments and approximations addressing this issue and making full use of computational capabilities of FDTD.
21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021
scattering theory; FDTD; plasmonic nano-array; waveguide; evanescent field
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Optical properties of a waveguide-fed plasmonic nano-array through approximated scattering theory / Alam, Badrul; Ferraro, Antonio; D'Alessandro, Antonio; Caputo, Roberto; Asquini, Rita. - (2021), pp. 23-24. ((Intervento presentato al convegno 21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 tenutosi a Torino [10.1109/NUSOD52207.2021.9541521].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1578738
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