  Raman spectroscopy is a widely-used non-destructive material characterization
method, which provides information about the vibrational modes of the material
and therefore of its atomic structure and chemical composition. Interpretation
of the spectra requires comparison to known references and to this end,
experimental databases of spectra have been collected. Reference Raman spectra
could also be simulated using atomistic first-principles methods but these are
computationally demanding and thus the existing databases of computational
Raman spectra are fairly small. In this work, we developed an optimized
workflow to calculate the Raman spectra more efficiently compared to existing
approaches. The workflow was benchmarked and validated by comparison to
experiments and previous computational methods for select technologically
relevant material systems. Using the workflow, we performed high-throughput
calculations for a large set of materials (5099) belonging to many different
material classes, and collected the results to a database. Finally, the
contents of database are analyzed and the calculated spectra are shown to agree
well with the experimental ones.
