Transient absorption
spectroscopy using three pulses (a strong
pump,
a
dump pulse that can alter the course of the reaction photoinduced by
the first pulse, and a weak
probe). In general, femtosecond
laser pulses are used.
Source:
PAC, 2007, 79, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 404