On-chip generation of Bessel–Gaussian beam via concentrically distributed grating arrays for long-range sensing  

作　　者：Zihao Zhi Quanxin Na Qijie Xie Baisong Chen Yingzhi Li Xiaobin Liu Xuetong Li Lijun Wang Guoqiang Lo Junfeng Song 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China [2]Peng Cheng Laboratory,Shenzhen 518000,China [3]State Key Laboratory of Luminescence and Application,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China [4]Advance Micro Foundry Pte.Ltd.,11 Science Park Road,Science Park II 117685,Singapore

出　　处：《Light(Science & Applications)》2023年第5期817-825,共9页光（科学与应用)（英文版）

基　　金：supported by National Key R&D Program of China under Grants no.2022YFB2804504;The National Natural Science Foundation of China under Grants nos.62090054,61934003,62105173 and 62105174;Major scientific and technological program of Jilin Province under Grants nos.20200501007GX and 20210301014GX;Program for JLU Science and Technology Innovative Research Team(JLUSTIRT,2021TD-39).

摘　　要：Bessel beam featured with self-healing is essential to the optical sensing applications in the obstacle scattering environment.Integrated on-chip generation of the Bessel beam outperforms the conventional structure by small size,robustness,and alignment-free scheme.However,the maximum propagation distance(Z_(max))provided by the existing approaches cannot support long-range sensing,and thus,it restricts its potential applications.In this work,we propose an integrated silicon photonic chip with unique structures featured with concentrically distributed grating arrays to generate the Bessel-Gaussian beam with a long propagation distance.The spot with the Bessel function profile is measured at 10.24m without optical lenses,and the photonic chip’s operation wavelength can be continuously performed from 1500 to 1630 nm.To demonstrate the functionality of the generated Bessel-Gaussian beam,we also experimentally measure the rotation speeds of a spinning object via the rotational Doppler Effect and the distance through the phase laser ranging principle.The maximum error of the rotation speed in this experiment is measured to be 0.05%,indicating the minimum error in the current reports.By the compact size,low cost,and mass production potential of the integrated process,our approach is promising to readily enable the Bessel-Gaussian beam in widespread optical communication and micro-manipulation applications.

关 键 词：scattering BESSEL beam 

分 类 号：O4[理学—物理]