HOLOGRAPHIC OPTICAL RECORDING MEDIUM, AND RECORDING AND REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a holographic optical recording medium which allows the irradiation with high-accuracy reference light and object light and a recording and reproducing device which records and reproduces information by using this holographic optical recording medium. SOLUTION: The holographic optical recording medium having a substrate transparent to light for hologram recording and light for servo and a hologram recording layer 2 disposed on this substrate 1 as constitution elements is constituted by forming the holographic optical recording medium having markers 3 arrayed on tracks 4 on the substrate 1 and further the recording and reproducing device having a means for recording holograms on the hologram recording layer 2 of the holographic optical recording medium and a means for reproducing wave fronts from the recorded holograms is constituted to have a servo mechanism of aligning the object light in hologram recording or aligning the reference light in wave front reproducing by means of the markers 3.