“…Owing to extremely high sensitivity to water content, THz spectroscopy has also been utilized to diagnose biological tissues including malignant and cancerous regions [5][6][7]. Furthermore, THz spectra have been described inherent characteristics of semiconducting materials such as carrier dynamics, phase and spin-state transitions [8][9][10]. However, most of the previous research and progress has been established in the field of THz pulsed spectrometer, which has some limitations such as size, cost, and frequency resolution.…”