Ah! This reference paper goes into more detail about how the reference spectra for the Raman fluorescence were acquired: https://doi.org/10.1089/ast.2022.0023 They built a fluorescence spectrometer identical to the SHERLOC tool onboard the Perseverance rover on Mars and tested it against a library of molecules of interest, including all L-amino acids and a few of the D-amino acids. Turns out the spectrometer cannot differentiate between the two:

The fluorescence spectra of d-phenylalanine and l-phenylalanine were almost identical, showing no obvious dependence on the chirality of the α-carbon.