Controlled coupling of a single emitter to a single mode of a microsphere: 
where do we stand?

Götzinger, Stephan; Menezes, L.D.; Mazzei, A.; Benson, O.; Talapin, D.P.V.; Gaponik, N.; Weller, H.; Rogach, A.L.; Sandoghdar, Vahid

doi:10.1117/12.483651

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Controlled coupling of a single emitter to a single mode of a microsphere: where do we stand?

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Citation

Götzinger, S., Menezes, L., Mazzei, A., Benson, O., Talapin, D., Gaponik, N., et al. (2003). Controlled coupling of a single emitter to a single mode of a microsphere: where do we stand? In LASER RESONATORS AND BEAM CONTROL VI (pp. 207-214). 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA: SPIE-INT SOC OPTICAL ENGINEERING.

Cite as: https://hdl.handle.net/21.11116/0000-0002-9BA9-1

Abstract

We measured the coupling of the fluorescence from semiconductor nano-crystals and sub-micron sized dye-doped beads to high-Q whispering gallery-modes (WGM) of a microsphere resonator. With Q-factors as high as 109 the fluorescence could be extracted in a controlled way via a prism coupler. We observed nearly 100% modulation in the spectrum which reflects the coupling to the WGMs. With the help of a beam scanning confocal microscope we were able to address a single 500 nm sized dye-doped bead on the sphere's surface and to collect and analyze its fluorescence in a well defined manner via the-prism coupler.