Wide dynamic range and real-time reagent identification and imaging using multi-wavelength terahertz parametric generation and machine learning

The generation angles of the detection Stokes beams are determined by the detected THz-waves according to the non-collinear phase-matching condition. Therefore, one-shot spectroscopy is achieved by converting the generation angles of detection Stokes beams into THz-wave frequencies. If the multi-wavelength detection Stokes beam images obtained from the camera contain different features for each reagent, they can be identified by machine learning. Figure 4 shows an image of the detection Stokes beam obtained when the reagent was inserted and the real-time identification results obtained by machine learning. Figure 4 Real-time identification results obtained by machine learning (displayed in color) in chronological order, along with screenshots of the detection Stokes beam obtained when the reagent was inserted.