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Opt Express. 2008 Oct 27;16(22):17358-65.

Exploring the limits of single emitter detection in fluorescence and extinction.

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1
Laboratory of Physical Chemistry and opt ETH, ETH Zürich, Zürich, Switzerland.

Abstract

We present an experimental comparison and a theoretical analysis of the signal-to-noise ratios in fluorescence and extinction spectroscopy of a single emitter. We show that because of its homodyne nature the extinction measurements can be advantageous if the emitter is weakly excited. Furthermore, we discuss the potential of this method for the detection and spectroscopy of weakly emitting systems such as rare earth ions.

PMID:
18958019
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