Metallic nanostructures as electronic billiards

authored by

Ihar Babushkin, Liping Shi, Ayhan Demircan, Uwe Morgner, Joachim Herrmann, Anton Husakou

Abstract

Optical properties of the metallic nanoparticles are most often described in terms of plasmons, that is, coupled states of light and electrons. Here we show that many discrete resonances, resulting from the quantum confinement of electronic wavefunctions inside the metallic nanostructure, may lead to a single strong composite resonance, located typically in the low-frequency (mid-infrared and terahertz) range. They give rise to strong nonlinearities allowing efficient generation of terahertz and mid-infrared frequencies on the distances of just hundred nanometers. Especially effective are the processes which couple the quantum-confinement-induced resonances with Mie-type ones.

Organisation(s)

Institute of Quantum Optics
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy im Forschungsbund Berlin e.V. (MBI)
Westlake University

Type

Preprint

Publication date

29.04.2021

Publication status

E-pub ahead of print

Electronic version(s)

http://arxiv.org/abs/2104.14637v1 (Access: Open)