A High-Speed and Stable THz Spectroscopic Imaging System Using Multiwavelength is- Tpg

In this study, we demonstrated a high-speed terahertz (THz) spectroscopic imaging system using a multiwavelength injection-seeded THz parametric generator (is-TPG). Multiwavelength is- Tpgcan identify reagents based on the repetition rate of the pump laser because the spectroscopic measurement is performed in a single pulse. Furthermore, highly stabilized measurements are realized by splitting the THz wave into measurement and reference beams. This system significantly shortens the measurement time for spectroscopic imaging with high stability.