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Title: Effects of gain medium on the plasmonic enhancement of Forster resonance energy transfer in the vicinity of a metallic particle or cavity
Authors: Railing Chang;P. T. Leung;D. P. Tsai
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2016
Issue Date: 2017-02-14T03:13:59Z
Publisher: Optics Express
Abstract: Abstract: We perform theoretical studies on the plasmonic enhancement for the Forster resonance energy transfer (FRET) between a donor and an acceptor molecule in the vicinity of a metallic particle or cavity, with focus on the possible role of the addition of a clad layer of gain material can play in such a process. The results show that while the plasmonic resonances can be shifted with higher order plasmonic enhancements emerged in the presence of such a layer of gain material, optimal enhancement of the FRET rate can be achieved when gain just balances with the loss in the metal. This then leads to the existence of an optimal thickness for the gain material layer, for both particle and cavity enhancement. In addition, it is observed that the FRET efficiency can always be increased with the coating of the gain material even at the dipole plasmonic resonance when nonradiative transfer from the donor to the metal is high, provided that the gain level is not beyond a certain critical value.
Relation: 22(22)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41304
Appears in Collections:[光電科學研究所] 期刊論文

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