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Proceedings Paper

A low-cost single-pixel terahertz imaging method using near-field photomodulation and compressed sensing
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Paper Abstract

We propose and demonstrate a low-cost single-pixel terahertz imaging method based on near-field photomodulation and compressed sensing. By using monolayer graphene on a silicon substrate as the photomodulator, and a low-cost continuous-wave laser and digital micromirror device for effective patterned photomodulation, we achieve fast single-pixel terahertz imaging based on the compressed sensing algorithm. We further show that adopting a graphene on silicon substrate leads to deeper modulation depth and thus better image quality than a high-resistance silicon substrate. We expect this work will advance the development of low-cost single-pixel terahertz imaging and promote this technique into practical applications.

Paper Details

Date Published: 18 November 2019
PDF: 6 pages
Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111960O (18 November 2019); doi: 10.1117/12.2537804
Show Author Affiliations
Rongbin She, Shenzhen Institutes of Advanced Technology (China)
Univ. of Chinese Academy of Sciences (China)
Yuanfu Lu, Shenzhen Institutes of Advanced Technology (China)
Wenquan Liu, Shenzhen Institutes of Advanced Technology (China)
Rui Zhang, Shenzhen Institutes of Advanced Technology (China)
Guangyuan Li, Shenzhen Institutes of Advanced Technology (China)


Published in SPIE Proceedings Vol. 11196:
Infrared, Millimeter-Wave, and Terahertz Technologies VI
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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