6533b823fe1ef96bd127e0a9
RESEARCH PRODUCT
Imaging of surface plasmon propagation and edge interaction using a photon scanning tunneling microscope
J.-p. GoudonnetJ.-p. GoudonnetF. De FornelF. De FornelPaul DawsonPaul Dawsonsubject
Scanning Hall probe microscopeMaterials scienceScanning tunneling spectroscopySurface plasmonNanophotonicsPhysics::OpticsGeneral Physics and AstronomySpin polarized scanning tunneling microscopyMolecular physicslaw.inventionScanning probe microscopylawScanning tunneling microscopeLocalized surface plasmondescription
We report the direct imaging of surface plasmon propagation on thin silver films using the photon scanning tunneling microscope. It is found that the surface plasmon remains tightly confined in the original launch direction with insignificant scattering to other momentum states. A propagation length of 13.2 \ensuremath{\mu}m is measured at \ensuremath{\lambda}=632.8 nm. We also present images showing the interaction of a surface plasmon with the edge of the metal film supporting it. The most remarkable feature is the absence of specularly reflected beam.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-05-02 | Physical Review Letters |