Abstract

A 3D-printed all-dielectric metasurface is presented in this Letter which can generate an accelerating beam with a circularly symmetric non-spreading transverse profile that can propagate along arbitrary convex trajectories. The curved trajectory is mapped to the corresponding direct-space spatial phases by the basic cube units with different geometrical heights. The required phase distribution is derived in detail based on the enveloping theory of differential geometry and the Bessel beam generation method. A metasurface with a preset trajectory is simulated and measured to demonstrate the validity of the phase distribution calculated by the proposed theory. The full-wave simulation and measurement results verify that the Bessel-like beam whose intensity follows a curved (off-axis) trajectory can be produced by the proposed metasurface. The generated hybrid beam merges the advantages of non-accelerating and accelerating diffractive-free beams. Therefore, the proposed metasurface has great potential in ultrahigh-speed communication, secure communication, near-field imaging, wireless energy transmission applications, and so on. The all-dielectric characteristic provides the proposed metasurface with the competitive advantages of low cost and easy large-scale processing.

© 2022 Optica Publishing Group

3D printed metasurface for generating a Bessel beam with arbitrary focusing directions

Mei-Jun Qu, Wen-Yu Li, Ting Zeng, Jian-Xun Su, and Wei-Li Song
Opt. Lett. 46(21) 5441-5444 (2021)

Observation of self-accelerating Bessel-like optical beams along arbitrary trajectories

Juanying Zhao, Peng Zhang, Dongmei Deng, Jingjiao Liu, Yuanmei Gao, Ioannis D. Chremmos, Nikolaos K. Efremidis, Demetrios N. Christodoulides, and Zhigang Chen
Opt. Lett. 38(4) 498-500 (2013)

Bessel-like optical beams with arbitrary trajectories

Ioannis D. Chremmos, Zhigang Chen, Demetrios N. Christodoulides, and Nikolaos K. Efremidis
Opt. Lett. 37(23) 5003-5005 (2012)

Non-diffracting and self-accelerating Bessel beams with on-demand tailored intensity profiles along arbitrary trajectories

Wenxiang Yan, Yuan Gao, Zheng Yuan, Zhuang Wang, Zhi-Cheng Ren, Xi-Lin Wang, Jianping Ding, and Hui-Tian Wang
Opt. Lett. 46(7) 1494-1497 (2021)

Vortex-Bessel beam generation by 3D direct printing of an integrated multi-optical element on a fiber tip

Shlomi Lightman, Omer Porat, Gilad Hurvitz, and Raz Gvishi
Opt. Lett. 47(20) 5248-5251 (2022)