Abstract
In this paper, the characteristic and Purcell factor of a metal fan-rod antenna are analyzed theoretically. The antenna consists of a pair of fan-rod structures. The characteristic is obtained by the simulation method. The results show that the coupling areas and the geometries of the fan-rod antenna have great influence on the resonance wavelength. The Purcell factor is also analyzed with the change of optical wavelength which can enhance the collection efficiency of single photon source. The theories, simulations and calculations in this paper are important for the experimental operation of single photon source with nanoantenna.
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