Unified evaluation of surface-enhanced resonance Raman scattering and fluorescence under strong coupling regime
Optics
2019-02-28 v1
Abstract
We demonstrate importance of molecular multiple excitons and higher-order plasmons for both enhancement and quenching of resonance Raman and fluorescence of single dye molecule located at plasmonic hotspot under strong coupling regime. The multiple excitons induce complicated spectral changes in plasmon resonance and higher-order plasmons yield drastic quenching for both resonant Raman and fluorescence. A coupled oscillator model composed of plasmon and multiple excitons reproduces the complicated spectral changes. Purcell factors derived from higher-order plasmons reproduce the drastic quenching with considering ultra-fast surface enhanced fluorescence.
Keywords
Cite
@article{arxiv.1803.01154,
title = {Unified evaluation of surface-enhanced resonance Raman scattering and fluorescence under strong coupling regime},
author = {Tamitake Itoh and Yuko S. Yamamoto},
journal= {arXiv preprint arXiv:1803.01154},
year = {2019}
}
Comments
18 pages, 4 figures