期刊
OPTIK
卷 170, 期 -, 页码 203-209出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijleo.2018.05.099
关键词
Terahertz; Absorber; Semiconductor; Heterostructure
类别
资金
- National Natural Science Foundation of China [11747028]
The absorption properties of a simple layered heterostructure composed of semiconductor and dielectric are analyzed by transfer matrix method. The numerical results indicate that such a structure can serve as a tunable multi-band terahertz perfect absorber. This phenomenon is due to the photon localization in the semiconductor layer at particular wavelengths and the presence of the damping factor of semiconductor layer. The number of the absorption peaks can be tuned by changing the thickness of the semiconductor layer. Moreover, the influences coming from the incident angle and the temperature of semiconductor on the absorption properties are also numerically studied.
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