Roadmap of Terahertz Imaging 2021

  • In this roadmap article, we have focused on the most recent advances in terahertz (THz) imaging with particular attention paid to the optimization and miniaturization of the THz imaging systems. Such systems entail enhanced functionality, reduced power consumption, and increased convenience, thus being geared toward the implementation of THz imaging systems in real operational conditions. The article will touch upon the advanced solid-state-based THz imaging systems, including room temperature THz sensors and arrays, as well as their on-chip integration with diffractive THz optical components. We will cover the current-state of compact room temperature THz emission sources, both optolectronic and electrically driven; particular emphasis is attributed to the beam-forming role in THz imaging, THz holography and spatial filtering, THz nano-imaging, and computational imaging. A number of advanced THz techniques, such as light-field THz imaging, homodyne spectroscopy, and phase sensitive spectrometry, THz modulated continuous wave imaging, room temperature THz frequency combs, and passive THz imaging, as well as the use of artificial intelligence in THz data processing and optics development, will be reviewed. This roadmap presents a structured snapshot of current advances in THz imaging as of 2021 and provides an opinion on contemporary scientific and technological challenges in this field, as well as extrapolations of possible further evolution in THz imaging.

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Author:Gintaras Valušis, Alvydas LisauskasORCiDGND, Hui YuanORCiD, Wojciech Knap, Hartmut RoskosORCiDGND
Parent Title (English):Sensors
Place of publication:Basel
Document Type:Article
Date of Publication (online):2021/06/14
Date of first Publication:2021/06/14
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2021/12/21
Tag:applications of teraherz imaging; artificial intelligence; computational imaging; diffractive optics; on-chip solutions; terahertz emission; terahertz sensing; teraherz imaging systems; teraherz nano-imaging and nanoscopy
Issue:12, art. 4092
Page Number:51
First Page:1
Last Page:51
This research received no dedicated funding, but benefited from many projects of which results flowed into this article. Recent funding sources: Deutsche Forschungsgemeinschaft, contracts RO 770/40, /43 and /48, ME5034/2; Messer Stiftung, project “Orts- und zeitaufgelöste Spektroskopie an plasmonischen Strukturen mittels s-SNOM-Nanoskopie”, IRAP Programme of the Foundation for Polish Science (grant MAB/2018/9, project CENTERA), project KITKAS, founded by Lithuanian Research Council, LAT-04/2016.
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):License LogoCreative Commons - Namensnennung 4.0