Fluorescence Enhancement Factors on Optical Antennas: Enlarging the Experimental Values without Changing the Antenna Design
(a) Average fluorescence count rate per molecule detected in the case of the corrugated aperture presented in Figure 1 (filled circles) and the reference solution (empty circles). The molecules have a quantum yield in solution of 30% (Alexa Fluor 647), and the numerical aperture used for both excitation and collection is 0.5. (b) Fluorescence enhancement factor for increasing excitation power. The arrows indicate the two extreme cases of weak excitation () and saturation (). Figure adapted with permission from .
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