低损耗太赫兹波导及其成像应用
投稿时间:2018-04-13  修订日期:2018-05-11  点此下载全文
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作者单位E-mail
李帅 南开大学 现代光学研究所 755925190@qq.com 
戴子杰 南开大学 现代光学研究所  
高翔 天津市交通运输工程质量安全监督总站  
占涛 南开大学 现代光学研究所  
赵得龙 南开大学 现代光学研究所  
龚诚 南开大学 现代光学研究所 gongcheng@nankai.edu.cn 
刘伟伟 南开大学 现代光学研究所  
基金项目:国家自然科学基金(61505087, 11574160); 国家重点研发计划(2018YFB0504400)
中文摘要:高性能的太赫兹功能器件在太赫兹波的产生、传输及探测上都有着重要意义。本文报道了一种Kagome型低损耗太赫兹波导及其成像应用。首先根据反谐振波导理论设计了0.1THz处低损耗的太赫兹波导,其理论损耗低至0.012 cm-1。然后使用3D打印技术制备波导实物,实验测得其损耗为0.0153 cm-1,波导末端光束发散角为6±0.5°。最后基于该波导搭建了可重构太赫兹成像装置,分别实现了对隐藏刀片、矿石的反射和透射成像,在地下远距离勘探领域具有潜在的应用前景。
中文关键词:太赫兹波导  太赫兹成像  透射成像  反射成像
 
Low-loss terahertz waveguide and its imaging application
Abstract:High-performance terahertz functional devices have great significance in the generation, transmission and detection of terahertz waves. This paper reports a Kagome-type low-loss terahertz waveguide and its imaging applications. Firstly, anti-resonant waveguide theory was used to design a Kagome terahertz waveguide with low loss transmission at 0.1 THz, which has a theoretical loss as low as 0.012 cm-1. Secondly, the waveguide was fabricated by 3D printing technology. The experimental loss is 0.0153 cm-1, and the beam divergence angle at the end of the waveguide is about 6±0.5 degree. Finally, a reconfigurable terahertz imaging system was set up based on the waveguide, which realizes reflection and transmission imaging for a hidden blade and ore respectively. This technology has great application prospects in the underground long-distance exploration.
keywords:Terahertz waveguide  terahertz imaging  transmission imaging  reflection imaging
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