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8 July 2022 Calibration of terahertz time-domain spectrometers and terahertz radiometry
Yuqiang Deng, Qing Sun, Chaochen Li, Yuancheng Wang
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Proceedings Volume 12284, 2021 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 1228403 (2022) https://doi.org/10.1117/12.2620306
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only
Abstract
Terahertz technology has been widely used in Chemical component recognition, high-speed communication, and security check imaging. Terahertz metrology plays an important role in all of these applications. The progress of terahertz spectrometers calibration and terahertz radiometry at the National Institute of Metrology, China, is introduced in this paper. A technique for calibration of terahertz time-domain spectrometers is introduced. The terahertz timedomain spectrometer is online calibrated with the terahertz echo pulse, and the measurement repeatability is improved. A high absorbance coating fabricated and a terahertz radiometer is developed. Broadband terahertz radiation is highly absorbed and accurate measured with this terahertz radiometer. A portable terahertz power is fabricated for measurement of terahertz sources and calibration of terahertz power meters.
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Yuqiang Deng, Qing Sun, Chaochen Li, and Yuancheng Wang "Calibration of terahertz time-domain spectrometers and terahertz radiometry", Proc. SPIE 12284, 2021 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1228403 (8 July 2022); https://doi.org/10.1117/12.2620306
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KEYWORDS
Calibration
Terahertz radiation
Radiometry
Metrology
Spectral calibration
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