Hologram recording medium and recording and reproducing system

[0046] In the following, embodiments of the present invention will be described with reference to the drawings.

[0047]FIG. 2 shows a recording disc in the form of an optical disc according to an exemplary embodiment.

[0048] The hologram recording medium comprises a substrate 3, and a reflective layer 4, a separation layer 5, a quarter (¼) wavelength plate 6, a recording layer 7, and protective layer 8 laminated on the substrate 3 from an opposite side to a side from which reference light impinges. In the hologram recording medium 2, the quarter wavelength plate 6 is disposed between the recording layer 7 and the reflective layer 4.

[0049] The substrate 3 is a parallel flat plate made, for example, of a glass or a plastic material which has been previously formed with addresses and track structures. The reflective layer 4, which is made, for example, of a metal such as aluminum or a multi-layer dielectric film, is formed with a plurality of guide tracks GT, in the form of grooves, that