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Düsseldorf 2007 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 61: Poster Quanteneffekte

Q 61.4: Poster

Thursday, March 22, 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. Artemyev1,2, Jose Dintinger3, Eloise Devaux3, Thomas W. Ebbesen3, and Ulrike Woggon11Experimentelle 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.

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