Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

Surface plasmon transmission across narrow grooves in thin silver films

Seidel, J.; Grafström, S.; Eng, L.; Bischoff, L.

We report on the direct measurement of surface plasmon transmissivity of narrow grooves in thin silver films using near-field optical microscopy in an attenuated-total-reflection setup. For different groove widths, we observe characteristic changes in transmissivity that are attributed to resonant gap modes. The results are in good agreement with existing theoretical predictions.

Keywords: Surface plasmon; narrow groves; focused ion beam; silver films

Publ.-Id: 5366