Düsseldorf 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 61: Poster Quanteneffekte

Q 61.4: Poster

Donnerstag, 22. März 2007, 16:30–18:30, Poster C

Towards Quantum Optics with Surface Plasmons — •Vasily V. Temnov¹, Yuri Fedutik¹, Marco Allione¹, Oliver Schöps¹, Vitaly Anikeyev¹, Mikhail V. Artemyev^1,2, Jose Dintinger³, Eloise Devaux³, Thomas W. Ebbesen³, and Ulrike Woggon¹ — ¹Experimentelle Physik IIb, Universität Dortmund, Otto-Hahn-Str. 4, 44221 Dortmund, Germany — ²Institute of Physico-Chemical Problems of Belorussian State University, Leningradskaya Str. 14, 220080 Minsk, Belorussia — ³Laboratoire des Nanostructures, ISIS, Universite Louis Pasteur, 8 allee Monge, BP 70028, 67083 Strasbourg, France

Excitation and propagation of electromagnetic surface waves (surface plasmons) at optical frequencies in different types of metallic nanostructures, i.e. slit-groove nanostuctures in noble metal films manufactured by a focused ion beam or chemically grown silver nanowires, are investigated by optical spectroscopy. Distinct Fabry-Perot-type periodic modulations in transmission spectra of these nanostructures can be attributed to excitation of surface plasmons and form the eigenmodes in plasmonic nanocavities. Using microphotoluminescence spectroscopy we demonstrate the excitation of plasmonic cavity modes via photoluminescence emission of semiconductor nanocrystals positioned ∼20 nm above the metal surface. Picosecond time-resolved photoluminescence measurements demonstrate the increase in SP-mediated spontaneous emission rate (Purcell effect). The possibilities to observe further quantum-optical effects with surface plasmons are discussed.