(Peer-Reviewed) Flexible rotation of transverse optical field for 2D self-accelerating beams with a designated trajectory
Lei Zhu ¹, Xuesong Zhao ¹, Chen Liu 刘陈 ¹, Songnian Fu 付松年 ², Yuncai Wang 王云才 ², Yuwen Qin 秦玉文 ²
¹ Wuhan National Laboratory for Optoelectronics, and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
中国 武汉 华中科技大学 光学与电子信息学院 武汉光电国家研究中心
² School of Information Engineering, Guangdong University of Technology, and Guangdong Provincial Key Laboratory of Photonics Information Technology, Guangzhou 510006, China
中国 广州 广东工业大学信息工程学院 广东省光子信息技术重点实验室
Opto-Electronic Advances, 2021-03-25
Abstract
Self-accelerating beams have the unusual ability to remain diffraction-free while undergo the transverse shift during the free-space propagation. We theoretically identify that the transverse optical field distribution of 2D self-accelerating beam is determined by the selection of the transverse Cartesian coordinates, when the caustic method is utilized for its trajectory design.
Based on the coordinate-rotation method, we experimentally demonstrate a scheme to flexibly manipulate the rotation of transverse optical field for 2D self-accelerating beams under the condition of a designated trajectory. With this scheme, the transverse optical field can be rotated within a range of 90 degrees, especially when the trajectory of 2D self-accelerating beams needs to be maintained for free-space photonic interconnection.
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