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0.1THz super-resolution imaging based on 3D printed confocal waveguides

Yu, Ting ; Zuo, Xu ; Liu, Weiwei ; Gong, Cheng

Optics communications, 2020-03, Vol.459, p.124896, Article 124896 [Periódico revisado por pares]

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Título:
0.1THz super-resolution imaging based on 3D printed confocal waveguides
Autor: Yu, Ting ; Zuo, Xu ; Liu, Weiwei ; Gong, Cheng
Assuntos: 3D printed ; Confocal system ; Super-resolution imaging ; Terahertz waveguide
É parte de: Optics communications, 2020-03, Vol.459, p.124896, Article 124896
Descrição: The paper reports a waveguide-based lens-free terahertz (THz) imaging method. It not only inherits the advantages of traditional confocal imaging, but also realizes super-resolution in THz band. The waveguides prepared by a 3D printing and metal-cladding technology can replace the traditional lens to transmit and focus THz wave effectively. For verification, two hollow waveguides (8 mm inner diameter, 60 mm length) were fabricated and a 0.1 THz confocal waveguides imaging system was built. High quality THz images with a minimum resolution of 1.41 mm (less than 1/2 of the wavelength) were obtained by placing the imaging targets at the waveguide’s focus and performing two-dimensional scanning. The focusing mechanism and transmission characteristics of THz in the waveguide are simulated and analyzed. The simulations are in agreement with the experiments.
Editor: Elsevier B.V
Idioma: Inglês

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