Abstract
We investigate the enhancement of the resonance energy transfer rate between donor and acceptor associated by the surface plasmons of the Ag nanorods on a SiO2 substrate. Our results for a single nanorod with different cross sections reveal that the cylinder nanorod has the strongest ability to enhance the resonance energy transfer rate. Moreover, for donor and acceptor with nonparallel polarization directions, we propose simple V-shaped nanorod structures which lead to the remarkable resonance energy transfer enhancement that is ten times larger than that by the single nanorod structure. We demonstrate that these structures have good robustness and controllability. Our work provides a way to improve the resonance energy transfer efficiency in integrated photonic devices.PACS78.67.Qa, 73.20.Mf, 42.50.Ex
Highlights
Resonance energy transfer (RET) between nanosystems is extensively researched in nanophotonics, which has various important applications ranging from biological detections and chemical sensors to quantum information science [1,2,3,4,5,6,7,8,9,10,11]
Notice that the longitudinal surface plasmon resonance modes of the nanorods are responsible for the enhancement of the RET rate; in order to compare the ability of different nanorods to enhance the RET, we tune the parameters a, r, and w to make the resonance frequencies of their longitudinal surface plasmon modes approximately equal
In summary, we have investigated the enhancement of the RET rate between donor and acceptor associated by the surface plasmons of the Ag nanorods on a SiO2 substrate
Summary
Resonance energy transfer (RET) between nanosystems is extensively researched in nanophotonics, which has various important applications ranging from biological detections and chemical sensors to quantum information science [1,2,3,4,5,6,7,8,9,10,11]. The efficient transfer energy distance is still very short. It is important to enhance the efficiency of RET in a long distance. It has been demonstrated that surface plasmon supported by metal nanostructures is a powerful tool to enhance the efficiency of RET. Since Andrew et al [5] demonstrated long-distance plasmon-mediated RET using Ag films, a great deal of
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