A recording apparatus for holographic recording medium having an alignment
mark and designed to irradiate a recording light beam onto a recording
region of holographic recording medium to record information as a
hologram. This apparatus comprises a recording laser recording the
hologram onto the medium, an alignment laser irradiating an alignment
light beam onto the medium, the alignment light beam being less absorbed
than the recording light beam by the medium, and being reflected by the
medium, a first lens converging the recording light beam and directing it
toward the medium, a second lens converging the alignment light beam and
directing it toward the medium, a photodetector detecting a light
intensity of the alignment light beam reflected from the medium to
recognize the alignment mark, and a driving mechanism adjusting a region
to be irradiated with the recording light beam relative to the medium
based on the alignment mark.