Time-Domain Interferometry of Surface Plasmons at Nonlinear Continuum Hot Spots in Films of Silver Nanoparticles

URN to cite this document:: urn:nbn:de:bvb:355-epub-384332
DOI to cite this document:: 10.5283/epub.38433

Klemm, Philippe ; Haug, Tobias ; Bange, Sebastian

; Lupton, John M.

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Date of publication of this fulltext: 14 Mar 2019 08:24

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Abstract

Nonlinear continuum generation from diffraction-limited hot spots in rough silver films exhibits striking narrow-band intensity resonances in excitation wavelength. Time-domain Fourier spectroscopy uncovers how these resonances arise due to the formation of a “plasmon staircase”, a discreteness in the fundamental oscillation of the plasmon excitations responsible for generating the white-light ...