Enhancing plasmonic trapping with a perfect radially polarized beam

作     者：xianyou wang yuquan zhang yanmeng dai changjun min xiaocong yuan 

作者机构：Nanophotonics Research CenterShenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2018年第6卷第9期

页      面：847-857页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(NSFC)(61427819,61490712,91750205,U1701661,61605117,11604219) National Key Basic Research Program of China(973)(2015CB352004) National Key Research and Development Program of China(2016YFC0102401) Leading Talents Program of Guangdong Province(00201505) Natural Science Foundation of Guangdong Province(2016A030312010,2016A030310063,2017A030313351) Science and Technology Innovation Commission of Shenzhen(KQTD2015071016560101,KQTD2017033011044403,ZDSYS201703031605029,JCYJ2017818144338999) Excellent Young Teacher Program of Guangdong Province(YQ2014151) China Post-doctoral Science Foundation(2017M612722) 

主　　题：金属薄膜 偏振光 等离子体 通讯技术 

摘      要：Strong plasmonic focal spots, excited by radially polarized light on a smooth thin metallic film, have been widely applied to trap various micro-and nano-sized objects. However, the direct transmission part of the incident light leads to the scattering force exerted on trapped particles, which seriously affects the stability of the plasmonic *** we employ a novel perfect radially polarized beam to solve this problem. Both theoretical and experimental results verify that such a beam could strongly suppress the directly transmitted light to reduce the piconewton scattering force, and an enhanced plasmonic trapping stiffness that is 2.6 times higher is achieved in *** present work opens up new opportunities for a variety of research requiring the stable manipulations of particles.