Knobbe, Martens, Olson & Bear LLP
Optical recording head device, optical recording apparatus, and recording method
According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.
Kabushiki Kaisha Toshiba
G G G
G11B G11B G11B
inventional additional additional
Takashi Nobuaki Masahiro Kazuto Keiichiro Chosaku Kazuo
Usui Kaji Saito Kuroda Yusu Noda Watabe