A Scanning-Free Terahertz Frequency Domain Spectroscopy
Journal of Infrared, Millimeter, and Terahertz Waves - Trang 1-10 - 2023
Tóm tắt
Frequency domain terahertz spectroscopy usually requires frequency scanning, which is quite time-consuming. In this work, we propose a new method to measure the terahertz spectra without scanning, which is based on a terahertz parametric generator and up-conversion detection system. Comparison is made between the terahertz transmission spectra measured by this method and by terahertz time domain spectroscopy (THz-TDS). In the range of 1 to 3 THz, all the absorption peaks observed on the THz-TDS spectra are also found on the spectra obtained by our method. The method has the potential to be single-shot and calibration-free.
Tài liệu tham khảo
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