Regensburg 2007 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 27: INTERNAL SYMPOSIUM Optical Spectroscopy II

CPP 27.5: Talk

Thursday, March 29, 2007, 16:00–16:15, H40

Optical Spectroscopy On Nanoparticles in a Linear Paul Trap — •Alexander Kuhlicke, Stefan Schietinger, and Oliver Benson — AG Nano-Optik, Institut für Physik, Humboldt-Universität zu Berlin Hausvogteiplatz 5-7, 10117 Berlin

Linear radio frequency ion traps, so-called Paul traps, are widely-used tools for high-resolution spectroscopy on atom ions and have also been utilized for the trapping of micrometer-sized particles. We have narrowed the gap between these size regimes by trapping single nanoparticles with sizes down to 20 nm within a linear Paul trap. This opens a way to investigate nanoparticles without the interaction with supporting surfaces. We observed ion chains and Coulomb-crystals within the trap and performed spectroscopy on trapped dye-doped particles and N-V centers in diamonds. Future experiments aim at the spectroscopy on mesoscopic quantum emitters.