时间分辨红外光谱分干涉和非干涉两种,前者时间分辨率较慢(几百ms~1ns),有好几个技术,如快速扫描、步进扫描等;后者时间分辨率很高,ps~fs,主要取决于脉冲激光的宽度;
这儿有一篇文献,详细地介绍了基于干涉仪的时间分辨FTIR光谱。
G. D. Smith, R. A. Palmer, Fast time-resolved mid-infrared spectroscopy using an interferometer [M]. Handbook of Vibrational Spectroscopy, Vol. 1, pp 625-640, edited by J. M. Chalmers and P.R. Griffiths, John Wiley and Sons, Ltd., 2002.
TR-FTIR