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DPG

Dresden 2003 – scientific programme

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O: Oberflächenphysik

O 12: Postersitzung (Struktur und Dynamik reiner Oberfl
ächen, Grenzfl
äche fest-flüssig, Nanostrukturen, Teilchen und Cluster, Halbleiteroberfl
ächen und Grenzfl
ächen, Zeitaufgelöste Spektroskopie, Rastersondentechniken, Methodisches)

O 12.42: Poster

Monday, March 24, 2003, 18:00–21:00, P1

Surface Plasmon Propagation In Structured Metal Films — •Jan Seidel1, Stefan Grafström1, Lothar Bischoff2, and Lukas M. Eng11Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 — 2Forschungszentrum Rossendorf , Institut für Ionenstrahlphysik und Materialforschung, D-01314 Dresden

Propagation of surface plasmons in thin metallic films and their interaction with defined surface structures are presented. We use near-field optical methods in order to reveal various properties of such travelling surface waves, like optical transmission across barriers or coupling to free space electromagnetic waves. These characteristics are directly determined using an attenuated-total-reflection (ATR) excitation scheme together with dielectric fiber probes for near-field optical detection. We show results on plasmon transmission of groove structures written into a thin silver film with a focused ion beam (FIB) and compare them to theoretical predictions.

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