Fast Three-dimensional Terahertz Imaging with Continuous-wave Photomixing

被引：3
|
作者：
Kaname, Ryohei [1 ]
Yi, Li [1 ]
Nagatsuma, Tadao [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
来源：
2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) | 2021年
基金：
日本科学技术振兴机构;
关键词：
D O I：
10.1109/IRMMW-THz50926.2021.9567535
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：
A high-speed frequency modulated continuous wave (FMCW) radar system is proposed for three-dimensional (3D) terahertz imaging. In order to obtain a high range resolution of mm-order together with fast data acquisition speed, the photonics-based approach is adopted. Thanks to the high-speed frequency sweep of a tunable laser device, the wide bandwidth ranged from 200 GHz to 420 GHz, which corresponds to a range resolution of similar to 1.3 mm, can be achieved within 35 msec. Furthermore, the 3D imaging of a multi-layer model was demonstrated with quasioptical imaging system, both range and spatial resolution can achieve to similar to 1.3 mm without using complicated signal processing.
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页数：2
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