| Literature DB >> 26833667 |
M Q Mehmood1, Shengtao Mei1,2, Sajid Hussain1, Kun Huang3, S Y Siew1, Lei Zhang1, Tianhang Zhang1, Xiaohui Ling1,4, Hong Liu3, Jinghua Teng3, Aaron Danner1, Shuang Zhang5, Cheng-Wei Qiu1,2.
Abstract
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.Keywords: babinet-inverted; metalens; multifocus; optical-vortex beam; topological charge
Year: 2016 PMID： 26833667 DOI： 10.1002/adma.201504532
Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849