High Refractive Index Metasurface for Terahertz Flat Optics

被引：0
|
作者：
Endo, K. [1 ]
Kim, J. [2 ]
Suzuki, T. [1 ,3 ]
机构：
[1] Tokyo Univ Agr & Technol, Tokyo, Japan
[2] ROHM Co Ltd, Kyoto, Japan
[3] Japan Sci & Technol Agcy, PRESTO, Saitama, Japan
来源：
2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2020年
关键词：
METAMATERIAL;
D O I：
10.1109/IRMMW-THZ46771.2020.9370901
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High refractive index metasurfaces can provide an accessible platform for terahertz flat optics with a variety of continuous-wave (CW) sources. We present a metasurface collimator that enhances the directivity of a terahertz CW source as a first application based on our original reflectionless metasurface with a high refractive index. Measurements confirm the directivity enhancement of 2.3 times at the far field with a resonant-tunneling diode oscillating at 0.312 THz. The proposed metasurface collimator can be incorporated in various beam shaping components and contribute to the development of terahertz applications such as wireless communication in the advanced generation 6G and imaging.
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页数：2
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