Berlin 2015 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 63: Group IV elements and compounds

HL 63.7: Talk

Thursday, March 19, 2015, 11:00–11:15, EW 015

Observation of Nitrogen Vacancy Center Fluorescence from Levitated Diamonds — •Alexander Kuhlicke, Andreas W. Schell, Joachim Zoll, Heather Partner, and Oliver Benson — Humboldt-Universität zu Berlin, Institut für Physik, AG Nanooptik, Newtonstraße 15, 12489 Berlin

Nitrogen vacancy (NV) defect centers in diamonds show remarkable optical properties and have emerged as perfect candidates for several different applications. Stabilization of diamond crystals in free space allows for particle isolation and is an important step towards optomechanical experiments on diamond nanoparticles. We report trapping of submicron diamonds in a linear quadrupole ion trap [1]. We discuss particle stability and the influence of surface charges, which are required for the electrodynamic confinement. The NV fluorescence of individual levitated clusters with diameters from micro- down to a few hundred nanometers can be observed. Optically characterized particles can be stored in the trap or deposited on photonic structures like fiber facets. Subsequently, an atomic force microscope can be used for precise size measurements.

[1] A. Kuhlicke et al., Nitrogen vacancy center fluorescence from a submicron diamond cluster levitated in a linear quadrupole ion trap, Appl. Phys. Lett. 105, 073101 (2014)