Local Density of States for Nanoplasmonics

We obtain the local density of states (LDOS) for any nanoplasmonic system in the frequency range dominated by a localized surface 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. W...

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Bibliographic Details
Published in:Physical review letters 2016-11, Vol.117 (20), p.207401-207401, Article 207401
Main Author: Shahbazyan, Tigran V
Format: Article
Language:English
Subjects:
Density of states
Emitters
Energy transfer
Frequency ranges
Nanostructure
Ohmic
Plasmonics
Plasmons
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Summary:We obtain the local density of states (LDOS) for any nanoplasmonic system in the frequency range dominated by a localized surface 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 formulas for the 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 Förster-dominated and plasmon-dominated ET regimes.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.117.207401