Thermal emission from layered structures containing a negative-zero-positive index metamaterial

被引：13
|
作者：
Wang, Li-Gang [1 ,2 ,3 ]
Li, Gao-Xiang [1 ,2 ,4 ]
Zhu, Shi-Yao [1 ,2 ,3 ,5 ]
机构：
[1] Chinese Univ Hong Kong, Ctr Opt Sci, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
[4] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China
[5] Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 07期
基金：
中国国家自然科学基金;
关键词：
PHOTONIC CRYSTAL; DIRAC POINT; RADIATION;
D O I：
10.1103/PhysRevB.81.073105
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Motivated by the realization of the optical Dirac dispersion in the homogenous negative-zero-positive index (NZPI) material, we make a theoretical investigation on the properties of thermal emission in layered structures containing the NZPI medium. We find that when the thermal emission frequency is close to the Dirac point of the NZPI medium, the spectral hemispherical power of thermal emission in such a structure is strongly suppressed and the emission can become a high directional source with large spatial coherence.
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页数：4
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