Abstract
Lenses/mirrors with fast data acquisition speeds and extended focal depths have practical importance in terahertz (THz) imaging systems. Thus, a high-speed 600 GHz-band THz imaging scanner system with enhanced focal depth is presented in this work. A polygon mirror with a 250 Hz scanning frequency and an integrated off-axis parabolic (OAP) mirror with an ~170 mm focal depth were employed for 2D imaging. The simulation and experimental results show that a spatial resolution of ~2 mm can be achieved as the imaging distance varies from ~85 to 255 mm. The proposed system was applied to image a hidden metal object as a potential security application, demonstrating that this system can image targets with an enhanced focal depth.
Funder
the Japan Society for JSPS Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists
KAKENHI Japan
the National Institute of Information and Communications Technology (NICT), Japan
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
Reference34 articles.
1. Twenty years of terahertz imaging;Mittleman;Opt. Exp.,2018
2. Valušis, G., Lisauskas, A., Yuan, H., Knap, W., and Roskos, H.G. (2021). Roadmap of Terahertz Imaging 2021. Sensors, 21.
3. Security Imaging for Multi-Target Screening Based on Adaptive Scene Segmentation with Terahertz Radar;Gui;IEEE Sens. J.,2019
4. Towards practical terahertz imaging system with Compact continuous wave transceiver;Yi;J. Light. Technol.,2021
5. Fast continuous terahertz wave imaging system for security;Song;Opt. Commun.,2009
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献