Terahertz imaging system based on bessel beams via 3D printed axicons at 100GHz

Changming Liu; Xuli Wei; Zhongqi Zhang; Kejia Wang; Zhenggang Yang; Jinsong Liu

doi:10.1117/12.2085082

11 November 2014 Terahertz imaging system based on bessel beams via 3D printed axicons at 100GHz

Changming Liu, Xuli Wei, Zhongqi Zhang, Kejia Wang, Zhenggang Yang, Jinsong Liu

Proceedings Volume 9275, Infrared, Millimeter-Wave, and Terahertz Technologies III; 92751Q (2014) https://doi.org/10.1117/12.2085082
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Terahertz (THz) imaging technology shows great advantage in nondestructive detection (NDT), since many optical opaque materials are transparent to THz waves. In this paper, we design and fabricate dielectric axicons to generate zeroth order-Bessel beams by 3D printing technology. We further present an all-electric THz imaging system using the generated Bessel beams in 100GHz. Resolution targets made of printed circuit board are imaged, and the results clearly show the extended depth of focus of Bessel beam, indicating the promise of Bessel beam for the THz NDT.

Citation Download Citation

Changming Liu, Xuli Wei, Zhongqi Zhang, Kejia Wang, Zhenggang Yang, and Jinsong Liu "Terahertz imaging system based on bessel beams via 3D printed axicons at 100GHz", Proc. SPIE 9275, Infrared, Millimeter-Wave, and Terahertz Technologies III, 92751Q (11 November 2014); https://doi.org/10.1117/12.2085082

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