Design and application of terahertz near field imaging quasi-optical path

Jinpeng Yang; Wanshun Jiang; Jianqin Deng; Xiaolin Liang; Yaohui Yang; Ting Zhang

doi:10.1117/12.3046522

13 December 2024 Design and application of terahertz near field imaging quasi-optical path

Jinpeng Yang, Wanshun Jiang, Jianqin Deng, Xiaolin Liang, Yaohui Yang, Ting Zhang

Author Affiliations +

Proceedings Volume 13495, AOPC 2024: Terahertz Technology and Applications; 134950E (2024) https://doi.org/10.1117/12.3046522
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

In order to solve the problem of mismatch between the size of the near-field probe and the wavelength of the terahertz beam in the terahertz near field imaging system, the quasi optical transmission path of the near field imaging is designed in this paper. The quasi optical path adopts two off axis parabolic mirrors for the collimation transmission and focusing of terahertz waves respectively. The electromagnetic simulation of the designed terahertz collimating transmission optical path is carried out, and the simulation results show that the collimating transmission and focusing of terahertz waves can be realized effectively. At the same time, the radiation performance of the near field probe in the electrically large and complex environment is simulated. The simulation results show that the quasi optical path can effectively collect the terahertz waves scattered by the probe. Based on the designed terahertz quasi optical transmission path, a terahertz near field imaging system is built and tested. The experimental results show that the quasi optical path can be effectively applied for terahertz near field imaging.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jinpeng Yang, Wanshun Jiang, Jianqin Deng, Xiaolin Liang, Yaohui Yang, and Ting Zhang "Design and application of terahertz near field imaging quasi-optical path", Proc. SPIE 13495, AOPC 2024: Terahertz Technology and Applications, 134950E (13 December 2024); https://doi.org/10.1117/12.3046522

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