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Optical forces in slot plasmonic waveguides
Kang Zhao,Shu Yang
Department of Physics, Beijing University of Posts and Telecommunications, 100876
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Funding: none
Opened online:21 November 2017
Accepted by: none
Citation: Kang Zhao,Shu Yang.Optical forces in slot plasmonic waveguides[OL]. [21 November 2017] http://en.paper.edu.cn/en_releasepaper/content/4742056
 
 
We propose two kinds of pair-structure plasmonic waveguides. Their gap mode properties are studied. It is found that very small mode areas can be obtained. Moreover, we calculate the optical forces that acting on the nanoparticle which is placed in the gap region of pair-structure waveguides. It is found that owing to the strong coupling between the pair structures, a strong local force(as much as more than 4000fN/W) can be generated, which is much stronger than those in most literatures. And the strength and range of the force can be adjusted by the parameters. With these features the pair-structure plasmonic waveguides may be applied as strong and tunable optical tweezers.
Keywords:Surface plasmon polaritons; Slot waveguide; Mode properties; Optical force; Optical tweezers
 
 
 

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