Abstract
This paper deals with the principles of detection of optical electric near-field by using single fluorescent molecules attached to the extremity of a pointed dielectric probe. The description of the detection–conversion process is performed by including both molecular absorption and emission in the presence of the complex electromagnetic surroundings seen by the molecule. In most of cases, a single molecule based detector provides a faithful reading of optical electric field maps near non-dissipative dielectric samples while in the presence of dissipative materials the pure information related to the electric field map is entangled with local information related to non-radiative leakages.
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