科研之友
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摘要
We calculate the radiative, nonradiative, and plasmonic decay rates of an individual optical emitter near a metallic nanowire with a nonlocal dielectric response. The potential inside the cylindrical wire is obtained within the random-phase approximation, which allows the nonlocal treatment of the electronic response. The induced field at the site of the emitter is also found. Calculations are carried out using a hydrodynamic dielectric function and the effects introduced by spatial dispersion through surface plasmons and reflection amplitudes are discussed. Nonlocal corrections to the emission rates become more relevant for nanowires with radii in the range of a few nanometers, at exciting frequencies close to the resonances of surface modes, and when the distance between the source dipole and the wire edge is comparable to the wire radius or lies in the subnanometer scale.
- 出版日期2017-6-9
