Document Detail

Dual-polarity plasmonic metalens for visible light.
MedLine Citation:
PMID:  23149743     Owner:  NLM     Status:  Publisher    
Surface topography and refractive index profile dictate the deterministic functionality of a lens. The polarity of most lenses reported so far, that is, either positive (convex) or negative (concave), depends on the curvatures of the interfaces. Here we experimentally demonstrate a counter-intuitive dual-polarity flat lens based on helicity-dependent phase discontinuities for circularly polarized light. Specifically, by controlling the helicity of the input light, the positive and negative polarity are interchangeable in one identical flat lens. Helicity-controllable real and virtual focal planes, as well as magnified and demagnified imaging, are observed on the same plasmonic lens at visible and near-infrared wavelengths. The plasmonic metalens with dual polarity may empower advanced research and applications in helicity-dependent focusing and imaging devices, angular-momentum-based quantum information processing and integrated nano-optoelectronics.
Xianzhong Chen; Lingling Huang; Holger Mühlenbernd; Guixin Li; Benfeng Bai; Qiaofeng Tan; Guofan Jin; Cheng-Wei Qiu; Shuang Zhang; Thomas Zentgraf
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Publication Detail:
Journal Detail:
Title:  Nature communications     Volume:  3     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1198     Citation Subset:  -    
1] School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK [2].
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