Plasmonic nano-resonator enhanced one-photon luminescence from single gold nanorods

TL;DR

This paper demonstrates enhanced one-photon luminescence from single gold nanorods, revealing a coherent emission process and presenting a cavity resonance-based theory that aligns well with experimental results.

Contribution

It introduces a theoretical model based on cavity resonance to explain both Stokes and anti-Stokes luminescence in gold nanorods, supported by experimental validation.

Findings

Strong correlation between Stokes and anti-Stokes emission intensity and polarization

Experimental evidence of a coherent emission process in gold nanorods

Theoretical model accurately explains observed luminescence phenomena

Abstract

Strong Stokes and anti-Stokes one-photon luminescence from single gold nanorods is measured in experiments. It is found that the intensity and polarization of the Stokes and anti-Stokes emissions are in strong correlation. Our experimental observation discovered a coherent process in light emission from single gold nanorods. We present a theoretical mode, based on the concept of cavity resonance, for consistently understanding both Stokes and anti-Stokes photoluminescence. Our theory is in good agreement of all our measurements.