期刊论文

Qiu, Cheng-Wei

英文

Advanced Materials

0935-9648

2016

28

13

2533-2539

10.1002/adma.201504532

National Research Foundation, Prime Minister's Office, Singapore under its Competitive Research Program (CRP Award)National Research Foundation, Singapore [NRF-CRP10-2012-04]; Singapore National Research Foundation under the 10 Tb/in2 density storage project under CRP Award [NRF-CRP4-2008-06]; National University of SingaporeNational University of Singapore [R-263-000-A45-112]; Agency for Science, Technology and Research (A*STAR)Agency for Science Technology & Research (ASTAR) [0921540099]; A*STAR-MINDEF JFP [102 1740172]; EPSRCUK Research & Innovation (UKRI)Engineering & Physical Sciences Research Council (EPSRC) [EP/J018473/1]; Leverhulme TrustLeverhulme Trust [RPG-2012-674]; Royal SocietyRoyal Society of LondonEuropean Commission; Engineering and Physical Sciences Research CouncilUK Research & Innovation (UKRI)Engineering & Physical Sciences Research Council (EPSRC) [EP/J018473/1] Funding Source: researchfish

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A multifocus optical vortex metalens, with enhanced signal-to-noise ratio, is presented, which focuses three longitudinal vortices with distinct topological charges at different focal planes. The design largely extends the flexibility of tuning the number of vortices and their focal positions for circularly polarized light in a compact device, which provides the convenience for the nanomanipulation of optical vortices. ©...