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8. Meander Line Nanoantenna Absorber for Subwavelength Terahertz Detection.

Author

Chen, Yuyao, Zhou, Haoran, Tan, Xiaochao, Jiang, Shun, Yang, Ao, Li, Junyu, Hou, Mingming, Guo, Qiushi, Wang, Shao-wei, Liu, Feng, Liu, Huan, and Yi, Fei

Abstract

The detection of terahertz electromagnetic waves is crucial for emerging applications within this frequency band, such as spectroscopy, imaging, and communication. Extending the well-developed uncooled infrared focal plane array technology to terahertz frequency regime would be very attractive, but high absorption in the terahertz region with a subwavelength pixel is necessary. In this paper, we proposed a meander line nanoantenna (MLNA) absorber with a metal–insulator–metal structure for subwavelength terahertz absorption. 89% absorption is achieved at the wavelength of 155 μm with a 10 μm pitch size. The MLNA absorber is polarization insensitive and can maintain a high absorption when the incident angle is within 40°. We expect that the proposed MLNA absorber can be integrated with the small pixels of uncooled infrared focal plane array for terahertz detection. [ABSTRACT FROM AUTHOR]

Published
2018
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