Terahertz super-resolution high-speed imaging system and its applications

Cheng Gong; Xinyu Li; Weiwei Liu

doi:10.1117/12.2687784

26 November 2023 Terahertz super-resolution high-speed imaging system and its applications

Cheng Gong, Xinyu Li, Weiwei Liu

Proceedings Volume 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X; 127760D (2023) https://doi.org/10.1117/12.2687784
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Due to the limitation of Abbe diffraction limit, the traditional terahertz (THz) continuous wave imaging methods based on lenses or mirrors are difficult to achieve super-resolution. Here we present a confocal waveguide scanning method for THz reflective super-resolution imaging. In the method, a low loss THz hollow waveguide is used to replace the traditional terahertz lens or parabolic mirror. Through optimizing the size of the waveguide, we can achieve far field subwavelength focusing at 0.1THz and achieve super-resolution terahertz imaging. In addition, a slider-crank high-speed scanning mechanism is used in the scanning system, and the imaging speed is more than 10 times faster than the traditional step scanning system based on linear guides. In addition, its application in the field of nondestructive testing is introduced.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Cheng Gong, Xinyu Li, and Weiwei Liu "Terahertz super-resolution high-speed imaging system and its applications", Proc. SPIE 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X, 127760D (26 November 2023); https://doi.org/10.1117/12.2687784

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