Three-dimensional nanoscale far-field focusing of radially polarized light by scattering the SPPs with an annular groove

Optics Express
Maoguo ZhangChunlei Du

Abstract

Three-dimensional (3D) nanoscale focusing of radially polarized light in far field by a simple plasmonic lens composed of an annular slit and a single concentric groove is reported. The numerical calculations reveal that the incident light is coupled to surface plasmon polaritons (SPP) by the annular slit and a focal spot with a size less than a half of the illumination wavelength is formed in the far field due to the constructive interference of the scattered light by the groove. More importantly, the focal length can be modulated by changing the groove diameter. This structure provides an admirable choice for the nano-optical devices.

References

Dec 20, 2003·Physical Review Letters·R DornG Leuchs
Sep 15, 2005·Nano Letters·Zhaowei LiuXiang Zhang
Mar 21, 2006·Optics Letters·Yuichi Kozawa, Shunichi Sato
Dec 5, 2008·Nano Letters·Lieven VerslegersShanhui Fan
Jul 17, 2000·Optics Express·K Youngworth, T Brown
Sep 5, 2005·Optics Express·Haofei ShiHongtao Gao
Apr 3, 2006·Optics Express·Michael R BeversluisStephan J Stranick
May 15, 2006·Optics Express·Avi NivErez Hasman
Jun 13, 2009·Physical Review Letters·Piotr WróbelTomasz Szoplik

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Citations

Jul 10, 2012·Optics Express·Soraya ZaibaPatrice L Baldeck
Oct 19, 2017·Optics Express·V V KotlyarE S Kozlova
Jun 25, 2019·Light, Science & Applications·Gang ChenCheng-Wei Qiu

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