Abstract

Based on the vectorial angular spectrum theory, we optimize superoscillatory lenses (SOLs) for focusing circularly polarized and radially polarized beams below the diffraction limits. Our simulations show that in comparison to the circularly polarized beam, the radially polarized beam can realize a smaller superfocusing hotspot at a longer distance from the SOL. Compared with the amplitude-type SOL, the phase-type SOL can realize a much brighter hotspot without increasing the size of the hotspot.

© 2015 Optical Society of America

Vectorial design of super-oscillatory lens

Tao Liu, Jiubin Tan, Jian Liu, and Hongting Wang
Opt. Express 21(13) 15090-15101 (2013)

Rigorous electromagnetic test of super-oscillatory lens

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Opt. Express 23(25) 32139-32148 (2015)

Reflection confocal nanoscopy using a super-oscillatory lens

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Opt. Express 27(14) 20012-20027 (2019)

Experimental generation of arbitrarily shaped diffractionless superoscillatory optical beams

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Opt. Express 21(11) 13425-13435 (2013)

Experimental realization of focal field engineering of the azimuthally polarized beams modulated by multi-azimuthal masks

Peng Li, Sheng Liu, Yi Zhang, Gaofeng Xie, and Jianlin Zhao
J. Opt. Soc. Am. B 32(9) 1867-1872 (2015)