Term: transient-stimulated emission pumping (TSEP)
https://doi.org/10.1351/goldbook.TT07487

Definition:
Transient-spectroscopy technique in which the excited state dynamics is probed via stimulating the molecular species from the photo-excited state (produced by a short pump pulse) back to the ground state by means of a short dump pulse at various pump–dump time delays.

Related Terms:
1) spectroscopy (http://doi.org/10.1351/goldbook.S05848).
2) excited state (http://doi.org/10.1351/goldbook.E02257).
3) ground state (http://doi.org/10.1351/goldbook.G02704).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 434 (https://doi.org/10.1351/pac200779030293)

Citation: 'transient-stimulated emission pumping (TSEP)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.TT07487

License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.

Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.