1.
Adv Mater
; 28(13): 2533-9, 2016 Apr 06.
Artigo
em Inglês
| MEDLINE
| ID: mdl-26833667
RESUMO
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.