biphotonic excitation
Simultaneous (coherent) @[email protected] of two @[email protected] (either same or different @[email protected]), the energy of excitation being the sum of the energies of the two photons. Also called @[email protected]
This term is sometimes also used for a two-step absorption.
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 308 [Terms] [Paper]