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.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. 1 THz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. 015 3 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.%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 lowloss transmission at 0. 1 THz, which has a theoretical loss as lowas 0. 012 cm-1. Secondly, the waveguide was fabricated by 3D printing technology. The experimental loss is 0. 015 3 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.
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