In an example holographic data storage medium, which has a polymer film
which serves as a storage layer and can be changed locally by heating,
the polymer film is set up as a top layer of the data storage medium.
Arranged underneath the polymer film is an absorber layer which has an
absorber dye. The absorber dye is set up to at least partly absorb a
write beam serving to put information in and to discharge the heat
produced in the process at least partly locally to the polymer film. In
an advantageous refinement of the example data storage medium, there is
an adhesive layer underneath the absorber layer and a partly transparent
reflective layer between the polymer film and the absorber layer.