Plasmonic crystal for efficient energy transfer from fluorescent molecules to long-range surface plasmons.
Corrugated metallic thin film structures that do not support short-range surface plasmon modes but do support long-range modes are discussed. The coupling efficiency of the energy of excited fluorescent molecules to long-range modes is theoretically calculated using the rigorous coupled wave approach. The obtained maximum coupling efficiency is found to be 55%, more that two times higher than the efficiency of uncorrugated metallic thin films.
RIKEN (The Institute of Physical and Chemical Research), Hirosawa, Wako, Saitama, Japan. okamoto@riken.jp
Takayuki
T
Okamoto
Janne
J
Simonen
Satoshi
S
Kawata