典型文献
Measuring the magnetic topological spin structure of light using an anapole probe
文献摘要：
Topological spin structures of light,including the Skyrmion,Meron,and bi-Meron,are intriguing optical phenomena that arise from spin-orbit coupling.They have promising potential applications in nano-metrology,data storage,super-resolved imaging and chiral detection.Aside from the electric part of optical spin,of equal importance is the magnetic part,particularly the H-type electromagnetic modes for which the spin topological properties of the field are dominated by the magnetic field.However,their observation and measurement remains absent and faces difficult challenges.Here,we design a unique type of anapole probe to measure specifically the photonic spin structures dominated by magnetic fields.The probe is composed of an Ag-core and Si-shell nanosphere,which manifests as a pure magnetic dipole with no electric response.The effectiveness of the method was validated by characterizing the magnetic field distributions of various focused vector beams.It was subsequently employed to measure the magnetic topological spin structures,including individual Skyrmions and Meron/Skyrmion lattices for the first time.The proposed method may be a powerful tool to characterize the magnetic properties of optical spin and valuable in advancing spin photonics.
文献关键词：
中图分类号：
作者姓名：
Fanfei Meng;Aiping Yang;Kang Du;Fengyang Jia;Xinrui Lei;Ting Mei;Luping Du;Xiaocong Yuan
作者机构：
Nanophotonics Research Centre,Institute of Microscale Optoelectronics,Shenzhen University,518060 Shenzhen,China;MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,710129 Xi'an,China
文献出处：
引用格式：
[1]Fanfei Meng;Aiping Yang;Kang Du;Fengyang Jia;Xinrui Lei;Ting Mei;Luping Du;Xiaocong Yuan-.Measuring the magnetic topological spin structure of light using an anapole probe)[J].光：科学与应用（英文版）,2022(10):2503-2511
A类：
Meron
B类：
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AB值：
0.542536
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