| 摘要 |
<p>The light emitted from a light source (1) is converged by an objective lens (5), and an auxiliary lens (SIL6) increases an effective numerical aperture to project the light on a recording medium (9). The temperature of a recording mark recording information on the recording medium is increased by the projection of the light, and saturation magnetization which is in accordance with the information is generated, thus generating magnetic flux. A reproducing magnetic layer (7), which is provided on the auxiliary lens (SIL6) and which is larger than the recording mark has magnetization which is aligned in direction over the entire domain of the reproducing magnetic layer in accordance with the magnetic flux generated from the recording mark, and transfers the information by temporarily enhancing it. The magnetization generated on the reproducing magnetic layer (7) has an effect on the polarization direction of the reflected light at the reproducing magnetic layer. The reflected light from the reproducing magnetic layer reaches a photodetector (12) through an analyzer (Wollaston prism 4) to generate a reproduced signal, thereby increasing recording density by means of preventing a reproduced signal amplitude from being reduced when the recording mark of the magneto-optical recording medium is reduced. <IMAGE></p> |
