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. 2021 Mar 21;39(5):631–651. doi: 10.1177/0734242X21997908

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 6. — Terahertz spectroscopy (THz) imaging setup on transmittance configuration. The THz source is an impact avalanche transit time diode and the camera is fabricated with a GaAs high-mobility heterostructure.