Generation of wavelength-independent subwavelength Bessel beams using metasurfaces

Light, Science & Applications
Wei Ting ChenFederico Capasso

Abstract

Bessel beams are of great interest due to their unique non-diffractive properties. Using a conical prism or an objective paired with an annular aperture are two typical approaches for generating zeroth-order Bessel beams. However, the former approach has a limited numerical aperture (NA), and the latter suffers from low efficiency, as most of the incident light is blocked by the aperture. Furthermore, an additional phase-modulating element is needed to generate higher-order Bessel beams, which in turn adds complexity and bulkiness to the system. We overcome these problems using dielectric metasurfaces to realize meta-axicons with additional functionalities not achievable with conventional means. We demonstrate meta-axicons with high NA up to 0.9 capable of generating Bessel beams with full width at half maximum about as small as ~λ/3 (λ=405 nm). Importantly, these Bessel beams have transverse intensity profiles independent of wavelength across the visible spectrum. These meta-axicons can enable advanced research and applications related to Bessel beams, such as laser fabrication, imaging and optical manipulation.

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Citations

Mar 7, 2019·Light, Science & Applications·Qiu WangWeili Zhang
Sep 29, 2017·Optics Letters·Jelena NotarosMichael R Watts
Oct 23, 2019·Nanoscale·Nasir MahmoodJunsuk Rho
Dec 28, 2019·Optics Express·Kai BianWei Hu
Aug 18, 2018·Applied Optics·Tingting ShenZhanghua Han
Jan 18, 2019·Light, Science & Applications·He-Xiu XuCheng-Wei Qiu
May 3, 2019·Optics Express·Muhammad Rizwan AkramWeiren Zhu
May 2, 2020·Scientific Reports·Homayoon Oraizi, Hedieh Emamian
Apr 1, 2017·Optics Letters·Guoxing ZhengSong Li
Mar 4, 2020·Optics Express·Hua LongPeixiang Lu
Jan 21, 2020·Nano Convergence·Chang-Won LeeHeejeong Jeong
May 2, 2020·Optics Letters·Zhi-Yong HuHong-Bo Sun
Jun 24, 2018·Scientific Reports·Weiwei LiuXiaodong Yang
Jan 22, 2021·ACS Applied Materials & Interfaces·Li NiuWeili Zhang
Jan 1, 2021·Optics Express·Shengqi YinXu Fang
Jun 2, 2021·Light, Science & Applications·Flavie Davidson-MarquisOliver Benson
Jun 16, 2021·Nature Communications·Yahya MohtashamiJon A Schuller
Apr 8, 2017·Nano Letters·Wei Ting ChenFederico Capasso
Feb 21, 2018·Nano Letters·Zhujun ShiFederico Capasso
Apr 21, 2020·ACS Applied Materials & Interfaces·Yulong FanAndre de Lustrac
Oct 12, 2021·Nano Letters·Soon Wei Daniel LimFederico Capasso
Nov 20, 2017··Mohammadreza KhorasaninejadZhujun Shi

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