HOLOGRAM RECORDING/REPRODUCTION DEVICE, HOLOGRAM REPRODUCTION DEVICE AND METHOD, AND COMPUTER PROGRAM

摘要

A hologram recording/reproduction device reproduces recording information from a holographic recording medium (1) where interference fringes formed by a reference light and an object light corresponding to the recording information are recorded. The hologram recording/reproduction device includes: irradiation means (10) for irradiating the reference light to a holographic recording medium; data generation means for generating detection information data (Ddet) according to the detection light generated by irradiation of the reference light; setting means (45) for setting a target irradiation position of the reference light on the surface of the holographic recording medium according to the detection information data; and movement means (35, 36) for moving the irradiation means with respect to the holographic recording medium along its surface so that the reference light is irradiated to the target irradiation position.