Miniature tunable Airy beam optical meta-device
마이크로 튜닝 가능 엘리언 빔 광학 소자
Componentes ópticos de haz de Erie en miniatura tunables
Optique micro - ajustable Airy beam
миниатюрный настраиваемый оптический элемент Элли
Jing Cheng Zhang 张景程 ¹, Mu Ku Chen 陈沐谷 ¹ ² ³, Yubin Fan ​范宇斌 ¹, Qinmiao Chen 陈钦杪 ⁴, Shufan Chen ​陈舒凡 ¹, Jin Yao 姚金​ ¹, Xiaoyuan Liu 刘小源 ¹, Shumin Xiao 肖淑敏 ⁴, Din Ping Tsai 蔡定平 ¹ ² ³
¹ Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
中国 香港 香港城市大学电机工程学系
² State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
中国 香港 香港城市大学 太赫兹及毫米波国家重点实验室
³ Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
中国 香港 香港城市大学生物系统、神经科学和纳米技术中心(CBNN)
⁴ Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, China
中国 深圳 哈尔滨工业大学 广东省半导体光电材料与智能光子系统重点实验室 微纳光电信息系统理论与技术工业和信息化部重点实验室
Opto-Electronic Advances, 26 February 2024

Tunable Airy beams with controllable propagation trajectories have sparked interest in various fields, such as optical manipulation and laser fabrication. Existing research approaches encounter challenges related to insufficient compactness and integration feasibility, or they require enhanced tunability to enable real-time dynamic manipulation of the propagation trajectory.

In this work, we present a novel method that utilizes a dual metasurface system to surpass these limitations, significantly enhancing the practical potential of the Airy beam. Our approach involves encoding a cubic phase profile and two off-axis Fresnel lens phase profiles across the two metasurfaces. The validity of the proposed strategy has been confirmed through simulation and experimental results.

The proposed meta-device addresses the existing limitations and lays the foundation for broadening the applicability of Airy beams across diverse domains, encompassing light-sheet microscopy, laser fabrication, optical tweezers, etc.
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