Wide Dynamic Range And Real-time Reagent Identification And Imaging Using Multi-wavelength Terahertz Parametric Generation And Machine Learning

This research focuses on the development of THz spectrometers based on the injection-seeded THz parametric generator (is-TPG). A multi-wavelength generation/detection is-TPG system was proposed and successfully obtained spectra in one shot. Machine learning was applied for the identification of spectra obtained in one shot, with the goal of devising a practical system to rapidly identify reagents, even through thick shields with attenuation rates of -60 dB. This system can also be used for spectroscopic imaging, allowing for the determination of the spatial distribution of reagents in a 40×40 mm2 area within a few tens of seconds.