Hot Paper - Flexible rotation of transverse optical field for 2D self-accelerating beams with a designated trajectory

Flexible rotation of transverse optical field for 2D self-accelerating beams with a designated trajectory

具有指定轨迹的二维自加速光束横向光场的灵活旋转
指定された軌道を持つ2D自己加速ビームの横方向光場の柔軟な回転
지정된 궤적을 가진 2D 자체 가속 빔을 위한 가로 광학 필드의 유연한 회전
Rotación flexible del campo óptico transversal para haces 2D autoacelerados con una trayectoria designada
Rotation flexible du champ optique transversal pour les faisceaux auto-accélérants 2D avec une trajectoire désignée
Гибкое вращение поперечного оптического поля для двумерных самоускоряющихся пучков с заданной траекторией

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

https://doi.org/10.29026/oea.2021.200021

https://www.oejournal.org/article/doi/10.29026/oea.2021.200021

Opto-Electronic Advances, 25 March 2021

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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