low-frequency fingerprints of molecules in the THz frequency region. However, its
conventional scan repetition rate (SRR) is limited below 1 Hz. Thus, in this Letter, we
propose an electrically controlled tuning system for the is-TPG, which provides high-speed
scanning and random hopping agility. We achieved rapid THz frequency scanning on a
pulse-by-pulse basis by employing a gain-switched laser diode and a micro …