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Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor

Downes, Lucy A.; MacKellar, Andrew R.; Whiting, Daniel J.; Bourgenot, Cyril; Adams, Charles S.; Weatherill, Kevin J.

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Authors

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Lucy Downes lucy.downes@durham.ac.uk
Post Doctoral Research Associate

Daniel J. Whiting



Abstract

There is much interest in employing terahertz (THz) radiation across a range of imaging applications, but so far, technologies have struggled to achieve the necessary frame rates. Here, we demonstrate a THz imaging system based upon efficient THz-to-optical conversion in atomic vapor, where full-field images can be collected at ultrahigh speeds using conventional optical camera technology. For a 0.55-THz field, we show an effective 1-cm2 sensor with near diffraction-limited spatial resolution and a minimum detectable power of ð190 30Þ fW s−1=2 per ð40 × 40Þ μm2 pixel capable of video capture at 3000 frames per second. This combination of speed and sensitivity represents a step change in the state of the art of THz imaging and will likely lead to its uptake in wider industrial settings.

Citation

Downes, L. A., MacKellar, A. R., Whiting, D. J., Bourgenot, C., Adams, C. S., & Weatherill, K. J. (2020). Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor. Physical Review X, 10(1), Article 011027. https://doi.org/10.1103/physrevx.10.011027

Journal Article Type Article
Acceptance Date Jan 6, 2020
Online Publication Date Feb 7, 2020
Publication Date Feb 7, 2020
Deposit Date Feb 10, 2020
Publicly Available Date Mar 29, 2024
Journal Physical Review X
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 10
Issue 1
Article Number 011027
DOI https://doi.org/10.1103/physrevx.10.011027

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by the American Physical Society under the terms of
the Creative Commons Attribution 4.0 International license.
Further distribution of this work must maintain attribution to
the author(s) and the published article’s title, journal citation,
and DOI.





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