surface-enhanced hyper-Raman spectroscopy

initialism: SEHRS
https://doi.org/10.1351/goldbook.08687
Measurement method of Raman spectroscopy by which the Raman spectrum is significantly enhanced simultaneously by both the hyper-Raman (see hyper-Raman spectroscopy) and surface-enhanced Raman (see surface-enhanced Raman spectroscopy) effects.
Note:
Very high enhancement factors of 1020 have been claimed.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 765 [Terms] [Paper]