Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
Q: Quantenoptik
Q 9: Quanteneffekte 1
Q 9.1: Vortrag
Montag, 24. März 2003, 14:00–14:15, F107
Coupling single nanoparticles to a high-Q microsphere resonator — •Stephan Götzinger1, Leonardo de S. Menezes1, Andrea Mazzei1, Vahid Sandoghdar2, and Oliver Benson1 — 1Humboldt-Universität zu Berlin, Institut für Physik, 10117 Berlin, Germany — 2ETH Zürich, Laboratorium für Physikalische Chemie, 8093 Zürich, Switzerland
Single nanoparticles coupled to high-Q whispering-gallery modes in silica microspheres are promising candidates for controlled cavity-QED experiments or the realization of a single quantum emitter laser. In our experiment we realized the coupling of a single 200 nm dye-doped bead to a high-Q microsphere as well as the detection of the fluorescence via a well defined and controllable output port.
We coated the microspheres with dye-doped beads or CdS/ZnS nanocrystals [1]. By using a homemade laser scanning microscope we were able to select and to address a single nanoparticle on the microsphere surface. The emission spectra observed via the prism outcoupler revealed a very pronounced modulation, agreeing well with the calculated free spectral range of the microsphere.
[1] Nanocrystals were provided by A. Rogach, Univ. Munich, N. Gaponik, D. Talapin, and H. Weller, Univ. Hamburg