Tunable terajets formed by core-shell microspheres for high-resolution terahertz zoom imaging

Haojie Wang; Xikang Zhou; Xingfei Chen; Yiping Han

doi:10.1117/12.3007272

24 November 2023 Tunable terajets formed by core-shell microspheres for high-resolution terahertz zoom imaging

Haojie Wang, Xikang Zhou, Xingfei Chen, Yiping Han

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351U (2023) https://doi.org/10.1117/12.3007272
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Terahertz (THz) imaging technology has garnered considerable attention across a range of fields. However, its progress is constrained by the challenge of achieving high resolution. The terajet effect, utilizing dielectric structures, has emerged for super-resolution THz imaging. Nevertheless, the short terajets generated by the reported structures pose challenges for practical matching with the experimental setup. This study introduces a novel approach employing core-shell microspheres to generate long terajets with tunable characteristics. Numerical simulations reveal that precise tuning of core-shell properties leads to diverse terajets characteristics, encompassing variations in maximum intensity (53.6 V²/m² to 261 V²/m²), focal length (0.05 λ to 3.8 λ), working distance (1.15 λ to 13.6 λ), and full width at half maximum (0.37 λ to 0.91 λ). These findings highlight the tunable potential of core-shell microspheres, holding promise for enhanced terahertz zoom imaging with improved resolution and adaptability.

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

Citation Download Citation

Haojie Wang, Xikang Zhou, Xingfei Chen, and Yiping Han "Tunable terajets formed by core-shell microspheres for high-resolution terahertz zoom imaging", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351U (24 November 2023); https://doi.org/10.1117/12.3007272

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