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Terahertz electrometry via infrared spectroscopy of atomic vapor (2022)
Journal Article
Chen, S., Reed, D. J., MacKellar, A. R., Downes, L. A., Almuhawish, N. F., Jamieson, M. J., …Weatherill, K. J. (2022). Terahertz electrometry via infrared spectroscopy of atomic vapor. Optica, 9(5), 485-491. https://doi.org/10.1364/optica.456761

In recent years, the characterisation of radiation falling within the so-called ‘terahertz (THz) gap’ has become an ever more prominent issue due to the increasing use of THz systems in applications such as nondestructive testing, security screening,... Read More about Terahertz electrometry via infrared spectroscopy of atomic vapor.

THz electrometry with Rydberg atoms and all IR lasers (2021)
Presentation / Conference Contribution
Chen, S., Reed, D., Downes, L. A., MacKellar, A. R., Almuhawish, N. F., Jamieson, M. J., …Weatherill, K. J. (2021). THz electrometry with Rydberg atoms and all IR lasers. In 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). https://doi.org/10.1109/irmmw-thz50926.2021.9567392

Rydberg electromagnetically induced transparency (EIT) and Autler-Townes (AT) splitting in an atomic vapor cell can be used as novel methods for electric-magnetic field detection. Here we make use of 3 infrared lasers to realize a Rydberg EIT system... Read More about THz electrometry with Rydberg atoms and all IR lasers.

Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor (2020)
Journal Article
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

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-... Read More about Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor.