In
physics and
physical chemistry,
time-resolved spectroscopy is the study of dynamic processes in materials or chemical compounds by means of
spectroscopic techniques. Most often, processes are studied after the illumination of a material occurs, but in principle, the technique can be applied to any process that leads to a change in properties of a material. With the help of pulsed
lasers, it is possible to study processes that occur on time scales as short as 10
-16 seconds.