We obtain local density of states (LDOS) for any nanoplasmonic system in the frequency range dominated by a localized plasmon. By including the Ohmic losses in a consistent way, we show that the plasmon LDOS is proportional to the local field intensity normalized by the absorbed power. We obtain explicit formulae for energy transfer (ET) between quantum emitters and plasmons as well as between donors and acceptors situated near a plasmonic structure. In the latter case, we find that the plasmon-assisted ET rate is proportional to the LDOS product at the donor and acceptor positions, obtain, in a general form, the plasmon ET enhancement factor, and establish the transition onset between Forster-dominated and plasmon-dominated ET regimes.
B. Keys and T. V. Shahbazyan, "Universal local density of states for nanoplasmonics," Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 991810 (Presented at SPIE Nanoscience + Engineering: August 30, 2016; Published: 16 September 2016); https://doi.org/10.1117/12.2238141.
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