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    Optical recording head device, optical recording apparatus, and recording method
    1.
    发明授权
    Optical recording head device, optical recording apparatus, and recording method 有权
    光记录头装置，光记录装置和记录方法

    公开(公告)号：US08077586B2

    公开(公告)日：2011-12-13

    申请号：US12257213

    申请日：2008-10-23

    申请人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

    发明人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

    IPC分类号： G11B7/00

    CPC分类号： G11B7/127 ,  G11B7/0045 ,  G11B7/006

    摘要： 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.

    摘要翻译： 根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元， 将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分布 以及光检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm以下。