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Landau broadening of plasmonic resonances in the Mie theory

Authors :
Igor E. Protsenko
Alexander V. Uskov
Renat Sh. Ikhsanov
I. V. Smetanin
Source :
Optics letters. 45(9)
Publication Year :
2020

Abstract

Landau damping in the metal nanosphere is considered beyond the quasistatic approximation with the use of the exact Mie theory when an incident plane wave can excite not only the dipole mode but also higher-order modes. In resonance approximation, when one considers excitation of a single mode, the analytical formula for the Landau damping coefficient for various modes has been derived. It was demonstrated that the simultaneous excitation of several eigenmodes, which are overlapped in the frequency domain, can lead to substantial correction of the Landau damping coefficients for the modes.

Details

ISSN :
15394794
Volume :
45
Issue :
9
Database :
OpenAIRE
Journal :
Optics letters
Accession number :
edsair.doi.dedup.....6c934730f98e67f1c74717247a0313e1