| 摘要 |
<p>An optical head apparatus for a magneto-optical recording medium (110) including a light beam source (21), an objective lens (24), a separating optical system (23 - 27), and a photodetector (28). The objective lens (24) is provided for irradiating an output light beam from the light beam source (21) as a focused light beam to the surface of the signal recording surface of the magneto-optical recording medium (110). The separating optical system (23 - 27) separates the light beam radiated from the light beam source (21) from a reflected light beam reflected by the signal recording surface of the magneto-optical recording medium (110) via the objective lens (24). The photodetector (28) receives the reflected light beam thus separated by the separating optical system (23 - 27). The separating optical system (23 - 27) also includes an enhancement element (26) which apparently increases the Kerr rotation angle of the reflected light beam. <IMAGE></p> |
