| DOI | Resolve DOI: https://doi.org/10.1109/IRMMW-THz57677.2023.10299336 |
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| Author | Search for: Fandio, Défi J. Jubgang; Search for: Vishnuradhan, Aswin; Search for: Yalavarthi, Eeswar. K.; Search for: Cui, Wei; Search for: Couture, Nicolas; Search for: Gamouras, Angela1; Search for: Ménard, Jean-Michel1 |
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| Affiliation | - National Research Council Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Conference | 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), September 17-22, 2023, Montreal, QC, Canada |
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| Subject | wireless communication; wireless sensor networks; electric potential; energy resolution; terahertz radiation; frequency conversion; electo-optic effects |
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| Abstract | We combine electro-optic sampling with single-photon counting technology to resolve weak terahertz (THz) radiation. A gallium-phosphide (GaP) crystal is used as the nonlinear medium for the parametric frequency conversion of broadband terahertz radiation to near-infrared (NIR) photons. The upconverted photons are measured using a monochromator combined with a single-photon counting module (SPCM). Results show good agreement of the measured upconverted photons with the theory of sum-frequency mixing. We also demonstrate that our detection technique is 180 times faster than standard electro-optic sampling and can access selected spectral components of the THz field with a resolution of 170 GHz. At 2.5 THz, results show a minimum detectable THz pulse energy of 20×10⁻²¹ J, which corresponds to 3 photons/pulse. This THz detection technique based on a SPCM holds a strong potential for high-speed wireless THz communication systems as well as quantum sensing. |
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| Publication date | 2023-09-17 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | b3f00ce3-aa6e-436d-96e5-da3bf8db3ed3 |
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| Record created | 2024-01-25 |
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| Record modified | 2024-01-25 |
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