Enhancement of light-matter interactions in slow-wave metasurfaces

被引：14
|
作者：
Xiao, Shiyi [1 ,2 ]
He, Qiong [1 ,2 ]
Huang, Xueqin [3 ]
Tang, Shiwei [1 ,2 ]
Zhou, Lei [1 ,2 ]
机构：
[1] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
来源：
PHYSICAL REVIEW B | 2012年 / 85卷 / 08期
关键词：
GUIDE;
D O I：
10.1103/PhysRevB.85.085125
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show that an ultrathin metamaterial can trap photons for a long time, with the measured longest trapping time being similar to 5 ns for a microwave pulse with a center frequency of 5.5 GHz. Such photon-trapping effect is governed by the anomalous dispersion and surface plasmon excitations of the system, which is more significant in thinner samples owing to stronger mode hybridizations. Light-matter interactions are remarkably enhanced inside these structures, leading to perfect omnidirectional light absorption and dramatically enhanced nonlinear generations, which are demonstrated by microwave experiments and full-wave simulations.
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页数：5
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