| 摘要 |
<p>[PROBLEMS] To provide an optical information recording method by which hologram size is reduced and recording density is improved, and to provide a recording medium. [MEANS FOR SOLVING PROBLEMS] An optical information recording apparatus records interference fringes of a recording reference beam and an information beam by applying the recording reference beam and the information beam spatially modulated by a spatial light modulator (11) having a plurality of pixels (12) to an recording medium by converging the beams to the recording medium by an objective lens (13). The optical axis (22) of the information beam traveling to the objective lens (13) from the spatial light modulator (11) does not accord with the mth diffracted beam (23) (m=0, ±1, ±2 and so on) diffracted by the spatial light modulator, a spatial modulation pattern (1303) for information beams includes a plurality of reference marks (1306), and a spatial frequency in a region of the reference mark (1306) includes a spatial frequency smaller than the basic spatial frequency of the spatial light modulator .</p> |
