Otical information recording device and optical information reproduction device

The present invention addresses the problem of obtaining an optical information recording/reproduction device and an optical information recording/reproduction method with which the media consumption amount of an oscillator page can be reduced significantly in comparison with the media consumption amount of a data page. To solve this problem, this optical information recording device, which uses holography to record information on an optical information recording medium, is characterized in that interference fringes of a signal light radiated from a signal light radiation unit and a reference light radiated from a reference light radiation unit are multiplex-recorded as a signal light hologram on a prescribed region of an optical information recording medium, and interference fringes of an oscillator light radiated from an oscillator light radiation unit and a reference light radiated from the reference light radiation unit are recorded as an oscillator hologram.