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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Nanooptik

Humboldt-Universität zu Berlin | Mathematisch-Naturwissen­schaft­liche Fakultät | Institut für Physik | Nanooptik | Publications | Confocal microscopy and spectroscopy of nanocrystals on a high-Q microsphere resonator

Stephan Götzinger, Leonardo dS Menezes, Oliver Benson, Dmitri V Talapin, Nicolaj Gaponik, Horst Weller, Andrey L Rogach, and Vahid Sandoghdar (2004)

Confocal microscopy and spectroscopy of nanocrystals on a high-Q microsphere resonator

Journal of Optics B: Quantum and Semiclassical Optics, 6(2):154-158.

We report on experiments where we used a home-made confocal microscope to excite single nanocrystals on a high-Q microsphere resonator. In that way spectra of an individual quantum emitter could be recorded. The Q factor of the microspheres coated with nanocrystals was still up to 109. We also demonstrate the use of a prism coupler as a well-defined output port to collect the fluorescence of an ensemble of nanocrystals coupled to whispering-gallery modes.