Аннотация
We propose an approach to improve the technical characteristics of terahertz time-domain spectrometers at low-frequency measurements. The approach is based on applying low-pass THz filters to narrow the frequency band of the THz signal that allows increasing the sampling interval in accordance with the Nyquist-Shannon theorem. This concept was verified by studying the transmission spectra of low-frequency band-pass THz filters centered at 156 and 376 GHz. We confirm that the high-quality low-pass filters can improve accuracy of THz measurements and significantly reduce data acquisition time. The reduction up to 12 times was experimentally demonstrated in our case.
Язык оригинала | английский |
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Номер статьи | 012118 |
Число страниц | 4 |
Журнал | Journal of Physics: Conference Series |
Том | 1461 |
Номер выпуска | 1 |
DOI | |
Состояние | Опубликовано - 23 апр 2020 |
Событие | 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019 - St. Petersburg, Российская Федерация Продолжительность: 15 июл 2019 → 19 июл 2019 |