Selective coherent perfect absorption in metamaterials

被引：55
|
作者：
Nie, Guangyu [1 ]
Shi, Quanchao [1 ]
Zhu, Zheng [1 ]
Shi, Jinhui [1 ,2 ]
机构：
[1] Harbin Engn Univ, Coll Sci, Minist Educ, Key Lab In Fiber Integrated Opt, Harbin 150001, Peoples R China
[2] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 20期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
ULTRATHIN BROAD-BAND; ABSORBER; LIGHT; REFLECTION; REFRACTION;
D O I：
10.1063/1.4902330
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We show multi-band coherent perfect absorption (CPA) in simple bilayered asymmetrically split ring metamaterials. The selectivity of absorption can be accomplished by separately excited electric and magnetic modes in a standing wave formed by two coherent counterpropagating beams. In particular, each CPA can be completely switched on/off by the phase of a second coherent wave. We propose a practical scheme for realizing multi-band coherent perfect absorption of 100% that is allowed to work from microwave to optical frequency. (C) 2014 AIP Publishing LLC.
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页数：4
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