System construction and imaging experiment of a focused 300G terahertz FMCW systems

Shitao Chen; Chengwu You; Kejia Wang; Jinsong Liu; Zhengang yang

doi:10.1117/12.2623733

20 January 2022 System construction and imaging experiment of a focused 300G terahertz FMCW systems

Shitao Chen, Chengwu You, Kejia Wang, Jinsong Liu, Zhengang yang

Author Affiliations +

Proceedings Volume 12154, 13th International Photonics and OptoElectronics Meetings (POEM 2021); 1215411 (2022) https://doi.org/10.1117/12.2623733
Event: 13th International Photonics and OptoElectronics Meetings (POEM 2021), 2021, Wuhan, China

Abstract

We built a 300G terahertz (THz) frequency modulated continuous wave(FMCW) imaging system. This paper describes the construction and imaging experiment of a FMCW system with a sweep bandwidth of 275~325GHz. Quasi-optical module of the system can focus the spot radius of the system from 16.35 mm to 7.61 mm. The signal-to-noise ratio and resolution of the system were greatly improved. At the same time, the cage structure design of industrial application-grade lens group is implemented, which greatly increases its applicability. We conducted both one-sided and three-dimensional imaging experiments on the built imaging experimental system. The results show that the resolution of the designed imaging system can reach 3 mm, which is of tremendous value for the application of THz nondestructive testing.

Citation Download Citation

Shitao Chen, Chengwu You, Kejia Wang, Jinsong Liu, and Zhengang yang "System construction and imaging experiment of a focused 300G terahertz FMCW systems", Proc. SPIE 12154, 13th International Photonics and OptoElectronics Meetings (POEM 2021), 1215411 (20 January 2022); https://doi.org/10.1117/12.2623733

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