Cascaded metasurfaces for complete phase and polarization control

被引：281
作者：
Pfeiffer, Carl [1 ]
Grbic, Anthony [1 ]
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 23期
基金：
美国国家科学基金会;
关键词：
BROAD-BAND; LIGHT; LENSES; PROPAGATION; REFLECTION; ARRAY;
D O I：
10.1063/1.4810873
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A metasurface lens that focuses light and controls its polarization at a wavelength of 2 mu m is presented. This lens demonstrates high transmission and complete phase control within a subwavelength thickness at near-infrared frequencies. By cascading four patterned sheets, the efficiency is dramatically improved over more common single sheet designs. In addition, by utilizing anisotropic sheets, arbitrary birefringence can be achieved. A planar lens that both focuses light and converts its polarization from linear to circular is analyzed. (C) 2013 AIP Publishing LLC.
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页数：4
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