Ultrabroadband Infrared Spectroscopy by Chirped Pulse Upconversion

摘要

We have demonstrated ultrabroadband infrared pump-probe spectroscopy using chirped pulse upconversion technique with a nonlinear mixing in a gas medium. Ultrafast pumpprobe spectroscopy in a full mid-infrared region (200-5000 cm~(-1)) at high speed has been realized with the technique. By using the system, we have measured ultrafast carrier dynamics in Ge in the range of 200-5000 cm~(-1).