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Regular version of the site

Article

Landau broadening of plasmonic resonances in Mie theory

Optics Express. 2020. Vol. 45. No. 9. P. 2644-2647.
Ikhsanov R., Protsenko I. E., Smetanin I., Uskov A. V.

Landau damping in the metal nanosphere is considered beyond the quasi-static approximation with the use of 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 have 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.