Optical superoscillatory waves without side lobes along a symmetric cut

作     者：Yanwen Hu Shiwang Wang Junhui Jia Shenhe Fu Hao Yin Zhen Li Zhenqiang Chen 

作者机构：Jinan UniversityDepartment of Optoelectronic EngineeringGuangzhouChina Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsGuangzhouChina 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2021年第3卷第4期

页      面：41-47页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：partially supported by the National Natural Science Foundation of China(11974146,61935010) the National Key Research and Development Program of China(2017YFB1104500) the Natural Science Foundation of Guangdong Province(2017B030306009,2018B010114002) the Pearl River Talent Project(2017GC010280) the Guangzhou Science and Technology Plan Project(201904010094) 

主　　题：optical superoscillation wave propagation sharp-edge diffraction 

摘      要：Optical superoscillation refers to an intriguing phenomenon of a wave packet that can oscillate locally faster than its highest Fourier component,which potentially produces an extremely localized wave in the far *** provides an alternative way to overcome the diffraction limit,hence improving the resolution of an optical microscopy ***,the optical superoscillatory waves are inevitably accompanied by strong side lobes,which limits their fields of view and,hence,potential ***,we report both experimentally and theoretically a new superoscillatory wave form,which not only produces significant feature size down to deep subwavelength,but also completely eliminates side lobes in a particular *** demonstrate a new mechanism for achieving such a wave form based on a pair of moonlike sharp-edge *** resultant superoscillatory wave exhibits Bessel-like forms,hence allowing long-distance propagation of subwavelength *** result facilitates the study of optical superoscillation and on a fundamental level eliminates the compromise between the superoscillatory feature size and the field of view.