| 摘要 |
A holographic data recording apparatus includes: a signal beam patterning unit for irradiating a signal beam (S1) onto a holographic medium (50), the signal beam including a data pattern (48) to be recorded; and a cylindrical optical body (102) including a cylindrical reflective surface, by which a reference beam (S21,S22) incident thereto is reflected toward the holographic medium (50) at a predetermined angle, wherein the data pattern is recorded on the holographic medium by interfering the signal beam with the reference beam on the holographic medium. The holographic data recording speed is increased and the cost of the holographic data recording apparatus is reduced.
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