Tailoring optical complex field with spiral blade plasmonic vortex lens

Scientific Reports
Guanghao RuiYiping Cui

Abstract

Optical complex fields have attracted increasing interests because of the novel effects and phenomena arising from the spatially inhomogeneous state of polarizations and optical singularities of the light beam. In this work, we propose a spiral blade plasmonic vortex lens (SBPVL) that offers unique opportunities to manipulate these novel fields. The strong interaction between the SBPVL and the optical complex fields enable the synthesis of highly tunable plasmonic vortex. Through theoretical derivations and numerical simulations we demonstrated that the characteristics of the plasmonic vortex are determined by the angular momentum (AM) of the light, and the geometrical topological charge of the SBPVL, which is govern by the nonlinear superposition of the pitch and the number of blade element. In addition, it is also shown that by adjusting the geometric parameters, SBPVL can be utilized to focus and manipulate optical complex field with fractional AM. This miniature plasmonic device may find potential applications in optical trapping, optical data storage and many other related fields.

References

Aug 15, 2003·Nature·William L BarnesThomas W Ebbesen
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Sep 15, 2005·Nano Letters·Zhaowei LiuXiang Zhang
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Apr 26, 2011·Nano Letters·Nir ShitritErez Hasman
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Nov 15, 2012·Nature Communications·Xianzhong ChenThomas Zentgraf
Jul 23, 2013·Scientific Reports·Guanghao RuiQiwen Zhan

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Citations

Jun 4, 2016·Scientific Reports·Hailong ZhouXinliang Zhang
Dec 17, 2015·Optics Letters·Angelo Angelini
Jul 1, 2019·Physical Review. a·Mohammad Asif ZamanLambertus Hesselink
Aug 18, 2020·Nano Letters·Yuanjie YangCheng-Wei Qiu

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Software Mentioned

COMSOL
COMSOL Multiphysics

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