TY  - JOUR
A1  - Valušis, Gintaras
A1  - Lisauskas, Alvydas
A1  - Yuan, Hui
A1  - Knap, Wojciech
A1  - Roskos, Hartmut
T1  - Roadmap of Terahertz Imaging 2021
T2  - Sensors
N2  - 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.
KW  - teraherz imaging systems
KW  - terahertz emission
KW  - terahertz sensing
KW  - diffractive optics
KW  - teraherz nano-imaging and nanoscopy
KW  - computational imaging
KW  - on-chip solutions
KW  - artificial intelligence
KW  - applications of teraherz imaging
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62172
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-621726
SN  - 1424-8220
N1  - 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.
VL  - 21
IS  - 12, art. 4092
SP  - 1
EP  - 51
PB  - MDPI
CY  - Basel
ER  -