{"term":{"id":"08682","title":"stimulated Raman scattering","longtitle":"IUPAC Gold Book - stimulated Raman scattering","doi":"10.1351\/goldbook.08682","code":"08682","status":"current","initialism":"<em>initialism<\/em>: SRS","definitions":[{"id":1,"text":"Two-photon Raman scattering occurs when a picosecond pump beam is used to create a virtual state and a probe beam of a frequency to match the frequency of Stokes Raman scattering from the virtual state to a specific vibrational level. The Stokes emission is stimulated thus depopulating the virtual state very quickly and increasing the scattering efficiency for the chosen vibration by orders of magnitude. SRS is a non-linear process, so sufficient photons from both the pump and probe beams must be present on the molecule at the one time.","links":[{"term":"Raman scattering","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08667"},{"term":"Stokes Raman scattering","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08683"}],"sources":["PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 764 (https:\/\/doi.org\/10.1515\/pac-2019-0203)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/08682\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/08682\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/08682\/plain"},"citation":"Citation: 'stimulated Raman scattering' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.08682","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.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","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.","accessed":"2026-05-30T13:15:57+00:00"}}