anti-Stokes Raman scattering 

https://doi.org/10.1351/goldbook.08570
Raman scattering of electromagnetic radiation in which the scattered radiation has greater energy (greater wavenumber) than the exciting radiation.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 738 [Terms] [Paper]