| 摘要 |
A beam applying method includes the steps of: rotationally driving an optical recording medium, in which a signal is recorded and reproduced by applying a beam thereto and which has a recording layer on which the signal is recorded, a polarization element formed below the recording layer, and a reflecting film formed below the polarization element; and applying a beam to the rotating optical recording medium through a half-wavelength plate that is rotationally driven with the rotation of the optical recording medium.
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