The 2023 Terahertz Science and Technology Roadmap
Creators: name: Leitenstorfer, Alfred
name: Moskalenko, Andrey S
name: Kampfrath, Tobias
name: Kono, Junichiro
name: Castro-Camus, Enrique
name: Peng, Kun
name: Qureshi, Naser
name: Turchinovich, Dmitry
name: Tanaka, Koichiro
name: Markelz, Andrea
name: Havenith, Martina
name: Hough, Cameron
name: Joyce, Hannah J
name: Padilla, Willie
name: Zhou, Binbin
name: Kim, Ki-Yong
name: Zhang, Xi-Cheng
name: Jepsen, Peter Uhd
name: Dhillon, Sukhdeep
name: Vitiello, Miriam Serena
name: Linfield, Edmund H
name: Davies, Alexander Giles
name: Hoffmann, Matthias
name: Lewis, Roger
name: Tonouchi, Masayoshi
name: Klarskov, Pernille
name: Seifert, Tom
name: Gerasimenko, Yaroslav
name: Mihailovic, Dragan D
name: Huber, Rupert
name: Boland, Jessica
name: Mitrofanov, Oleg
name: Dean, Paul
name: Ellison, Brian
name: Huggard, Peter
name: Rea, Simon
name: Walker, Christopher
name: Leisawitz, David
name: Gao, Jian Rong
name: Li, Chong
name: Chen, Qin
name: Valusis, Gintaras
name: Wallace, Vincent Patrick
name: MacPherson, Emma
name: Shang, Xiaobang
name: Hesler, Jeffrey
name: Ridler, Nick
name: Renaud, Cyril
name: Kallfass, Ingmar
name: Nagatsuma, Tadao
name: Zeitler, Axel
name: Arnone, Don
name: Johnston, Michael
name: Cunningham, John
Publisher: name: Apollo - University of Cambridge Repository
Year: 2023
Subjects: Roadmap
terahertz
spectroscopy
photonics

description: Funder: Alexander von Humboldt Foundation
description: Funder: Experienced Researcher Fellowship
description: Funder: DFG Collaborative
description: Funder: PAPIIT
description: Funder: Danish National Research Foundation
description: Funder: JSPS
description: Funder: STFC Centre for Instrumentation
description: Funder: UKSA Centre for Earth
description: Funder: Leverhulme Trust; doi: http://dx.doi.org/10.13039/501100000275
description: Funder: NRF
description: Funder: Royal Society; doi: http://dx.doi.org/10.13039/501100000288
description: Funder: Australian Government; doi: http://dx.doi.org/10.13039/100015539
description: Funder: Cancer Research UK; doi: http://dx.doi.org/10.13039/501100000289
description: Funder: University of Warwick; doi: http://dx.doi.org/10.13039/501100000741
description: Abstract Terahertz (THz) radiation encompasses a wide spectral range within the electromagnetic spectrum that extends from microwaves to the far infrared (100 GHz to ~30 THz). Within its frequency boundaries exist a broad variety of scientific disciplines that have presented, and continue to present, technical challenges to researchers. During the past 50 years, for instance, the demands of the scientific community have substantially evolved and with a need for advanced instrumentation to support radio astronomy, Earth observation, weather forecasting, security imaging, telecommunications, non-destructive device testing and much more. Furthermore, applications have required an emergence of technology from the laboratory environment to production-scale supply and in-the-field deployments ranging from harsh ground-based locations to deep space. In addressing these requirements, the research and development community has advanced related technology and bridged the transition between electronics and photonics that high frequency operation demands. The multidisciplinary nature of THz work was our stimulus for creating the 2017 THz Science and Technology Roadmap (S S Dhillon et al 2017 J. Phys. D: Appl. Phys. 50 043001). As one might envisage, though, there remains much to explore both scientifically and technically and the field has continued to develop and expand rapidly. It is timely, therefore, to revise our previous roadmap and in this 2023 version we both provide an update on key developments in established technical areas that have important scientific and public benefit, and highlight new and emerging areas that show particular promise. The developments that we describe thus span from fundamental scientific research, such as THz astronomy and the emergent area of THz quantum optics, to highly applied and commercially and societally impactful subjects that include 6G THz communications, medical imaging, and climate monitoring and prediction.