A Time-Resolved FTIR Emission Spectrometer Used for Photochemical Reactions

A high-resolution, time-resolved Fourier transform infrared （FTIR）emission spectrometer to study photochemical reactions has been established. The capability to obtain vibrational and rotational-state details of the excited products reveals intriguity new features about the dynamics of the processes. This paper systematically introduces the principle and structure. of this set-up and its application in such fields as photofragmentation, radical（atom）—molecule reaction and vibrational evergy transfer.