Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11468-013-9597-8
Title: Super-Resolution Long-Depth Focusing by Radially Polarized Light Irradiation Through Plasmonic Lens in Optical Meso-field
Authors: Peng, R.
Li, X.
Zhao, Z.
Wang, C.
Hong, M. 
Luo, X.
Keywords: Long DOF
Meso-field
Plasmonic lens
Radially polarized light
Super-resolution
Issue Date: Feb-2014
Source: Peng, R., Li, X., Zhao, Z., Wang, C., Hong, M., Luo, X. (2014-02). Super-Resolution Long-Depth Focusing by Radially Polarized Light Irradiation Through Plasmonic Lens in Optical Meso-field. Plasmonics 9 (1) : 55-60. ScholarBank@NUS Repository. https://doi.org/10.1007/s11468-013-9597-8
Abstract: In this paper, we propose a novel plasmonic lens design consisting of an annular slit and concentric grooves. The simulation results show that under radially polarized illumination, a super-resolution long depth of focus (DOF) spot can be achieved in optical meso-field due to the constructive interference of scattered light by the concentric grooves. We also analyze the influence of depth-tuned annular grooves on focusing performance, including focal length, DOF, and full-width half-maximum. Moreover, focusing efficiency can be enhanced (∼350 %) by introducing a circular metallic grating which surrounds the annular slit. This plasmonic lens has potential applications in nano-imaging and nano-photolithography. © 2013 Springer Science+Business Media New York.
Source Title: Plasmonics
URI: http://scholarbank.nus.edu.sg/handle/10635/83116
ISSN: 15571955
DOI: 10.1007/s11468-013-9597-8
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