文章基本信息

标题：High-efficiency chiral meta-lens
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作者：Benedikt Groever ; Noah A. Rubin ; J. P. Balthasar Mueller 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：7240
DOI：10.1038/s41598-018-25675-3
语种：English
出版社：Springer Nature
摘要：We present here a compact metasurface lens element that enables simultaneous and spatially separated imaging of light of opposite circular polarization states. The design overcomes a limitation of previous chiral lenses reliant on the traditional geometric phase approach by allowing for independent focusing of both circular polarizations without a 50% efficiency trade-off. We demonstrate circular polarization-dependent imaging at visible wavelengths with polarization contrast greater than 20dB and efficiencies as high as 70%.