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Conferences > PVLED > 2022 > JW3A > JW3A.27

High numerical aperture metalens for generating sub-diffraction non-diffracting beams at violet

Kun Zhang, Hai Jiang, and Yi Zhou

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Abstract

We propose a meta-axicon with a high numerical aperture (NA) of 0.75 at the wavelength of 405 nm. We both numerically and experimentally demonstrate that our method can generate non-diffracting beams with sub-diffraction limited focusing.

© 2022 The Author(s)

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