depolarized Raman band 

https://doi.org/10.1351/goldbook.08587
Raman band with depolarization ratio ρ=0.75 for linear polarized incident radiation in normal Raman spectroscopy.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 743 [Terms] [Paper]