Infrared Spatial and Frequency Selective Metamaterial with Near-Unity Absorbance

被引：1017
作者：
Liu, Xianliang [1 ]
Starr, Tatiana [2 ]
Starr, Anthony F. [2 ]
Padilla, Willie J. [1 ]
机构：
[1] Boston Coll, Dept Phys, 140 Commonwealth Ave, Chestnut Hill, MA 02467 USA
[2] SensorMetrix Inc, San Diego, CA 92121 USA
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 20期
关键词：
MAGNETIC RESPONSE; NEGATIVE INDEX; TERAHERTZ; REFRACTION;
D O I：
10.1103/PhysRevLett.104.207403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate, for the first time, a spatially dependent metamaterial perfect absorber operating in the infrared regime. We achieve an experimental absorption of 97% at a wavelength of 6.0 mu m, and our results agree well with numerical full-wave simulations. By using two different metamaterial sublattices we experimentally demonstrate a spatial and frequency varying absorption which may have many relevant applications, including hyperspectral subsampling imaging.
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页数：4
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