LIGHT-ASSISTED MAGNETIC HEAD APPARATUS, LIGHT-ASSISTED MAGNETIC RECORDING APPARATUS, AND LIGHT-ASSISTED MAGNETIC RECORDING METHOD

摘要

A light-assisted magnetic head apparatus is provided. The light-assisted magnetic head apparatus includes a focusing optical system and a thin magnetic head having a main magnetic pole. The focusing optical system includes a hemispherical or hyper-hemispherical solid immersion lens. The thin-film magnetic head includes a metal layer that causes surface plasmon resonance on a light-incident side of the main magnetic pole.