Surface-enhanced Raman scattering and fluorescence near metal nanoparticles

Abstract

We present a general model study of surface-enhanced resonant Raman scattering and fluorescence, focusing on the interplay between electromagnetic (EM) effects and the molecular dynamics as treated by a density matrix calculation. The model molecule has two electronic levels, is affected by radiative and non-radiative damping mechanisms, and a Franck-Condon mechanism yields electron-vibration coupling. The coupling between the molecule and the electromagnetic field is enhanced by placing it between two Ag nanoparticles. The results show that the Raman scattering cross section can, for realistic parameter values, increase by some 10 orders of magnitude (to $\sim 10^{-14}$ cm${}^2$) compared with the free-space case. Also the fluorescence cross section grows with increasing EM enhancement, however, at a slower rate, and this increase eventually stalls when non-radiative decay processes become important. Finally, we find that anti-Stokes Raman scattering is possible with strong incident laser intensities, $\sim 1$ mW/$\mu$m.

18 pages, 14 figures

References in corpus (3)

• Unified treatment of fluorescence and Raman scattering processes near metal surfaces
• Resonance fluorescence in a band gap material: Direct numerical simulation of non-Markovian evolution
• Light emission from Na/Cu(111) induced by a scanning tunneling microscope

Cited by in corpus (32)

• Strong coupling between surface plasmon polaritons and emitters
• QED description of Raman scattering from molecules in plasmonic cavities
• Raman Images of a Single Molecule in a Highly Confined Plasmonic Field
• Many-body theory of surface-enhanced Raman scattering
• Plasmon enhanced upconversion luminescence near gold nanoparticles - Simulation and analysis of the interactions
• Fluorescence quenching near small metal nanoparticles
• Dissipative dynamics of a solid-state qubit coupled to surface plasmons: from non-Markov to Markov regimes
• One-dimensional plasmonic hotspots located between silver nanowire dimers evaluated by surface-enhanced resonance Raman scattering
• A density matrix approach for the electroluminescence of molecules in a scanning tunneling microscope
• On the linear response and scattering of an interacting molecule-metal system
• Plasmons Driven by Single Electrons in Graphene Nanoislands
• Electromagnetic Green's function for layered systems: Applications to nanohole interactions in thin metal films
• Quantum description of surface-enhanced resonant Raman scattering within a hybrid-optomechanical model
• Nonlocal effects: relevance for the spontaneous emission rates of quantum emitters coupled to plasmonic structures
• Absorption cross-section spectroscopy of single strong coupling system between plasmon and molecular exciton resonance using single silver nanoparticle dimer generating surface enhanced resonant Raman scattering
• Anti-crossing properties of strong coupling system of silver nanoparticle dimers coated with thin dye molecular films analyzed by classical electromagnetism
• Fano-Liouville Spectral Signatures in Open Quantum Systems
• Effects of Interference between Energy Absorption Processes of Molecule and Surface Plasmons on Light Emission Induced by Scanning Tunneling Microscopy
• Raman Scattering near Metal Nanostructures
• Spectral correlation between surface-enhanced resonant Raman and far field scattering destructed by dipole quadrupole coupled plasmon resonance
• Electromagnetic enhancement generated by Ap term of cavity quantum electrodynamics demonstrated by single coupled systems between plasmon and molecular exciton
• Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices
• Electromagnetic enhancement of one-dimensional plasmonic hotspots along silver nanowire dimer examined by ultrafast surface enhanced fluorescence
• Unified evaluation of surface-enhanced resonance Raman scattering and fluorescence under strong coupling regime
• Momentum-resolved surface enhanced Raman scattering from a nanowire-nanoparticle junction cavity
• Signatures of Plexcitonic States in Molecular Electroluminescence
• Enhanced Raman scattering mediated by large wave-vector surface plasmon polaritons
• Has the chemical contribution a secondary role in SERS?
• Amplified emission and lasing in a plasmonic nano-laser with many three-level molecules
• Plasmon-enhanced two photon excited emission from edges of one-dimensional plasmonic hotspots with continuous-wave laser excitation
• Ultrabroad resonance of localized plasmon on a nanoparticle coupled with surface plasmon on a nanowire enabling two-photon excited emission via continuous-wave laser
• Excitation of confined modes on particle arrays