Abstract

We investigate the effects of spatial confinement of plasmon gap-modes on pho-toluminescence in plasmonic nanostructures. The nanostructure design used is the common “particle-on-mirror” geometry using Au gratings separated from Au films by nanometric SiO2 layers which allows for very precise and tunable gap-mode plasmon resonance. Here we present results obtained with precisely nanofabricated structures rather than rough metal films with randomly oriented plasmon “hot spots”, and show the photoluminescence spectra has a nonlinear power law dependence of p(ω) = 1 for continuous wave laser excitation and p(ω) ∝ ω for pulsed laser excitation.

© 2018 The Author(s)

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription