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    STRUCTURE POSITIONED BETWEEN MAGNETIC POLE AND NEAR-FIELD TRANSDUCER
    31.
    发明申请
    STRUCTURE POSITIONED BETWEEN MAGNETIC POLE AND NEAR-FIELD TRANSDUCER 审中-公开
    磁极与磁场传感器之间的结构位置

    公开(公告)号：US20160133286A1

    公开(公告)日：2016-05-12

    申请号：US14886524

    申请日：2015-10-19

    Applicant: Seagate Technology LLC

    Inventor： Tae-Woo Lee ,  David M. Grundman

    IPC: G11B5/48

    CPC classification number: G11B5/4866 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: An apparatus includes a waveguide, a magnetic pole, and a near-field transducer. The near field transducer is positioned at or near a media-facing surface. The near-field transducer is operatively coupled to the waveguide. The near-field transducer includes an enlarged region. The near-field transducer also includes a peg region extending from the enlarged region towards the media-facing surface. The peg region is separated from the magnetic pole. The near-field transducer also includes a structure positioned between the magnetic pole and the peg region. The structure is separated from the peg region by a gap. The structure extends from the enlarged region towards the media-facing surface. The structure is configured to extend generation of surface plasmons toward the magnetic pole.

    Abstract translation: 一种装置包括波导，磁极和近场换能器。 近场换能器被定位在面向介质的表面上或附近。 近场换能器可操作地耦合到波导。 近场换能器包括放大区域。 近场换能器还包括从扩大区域延伸朝向介质面向表面延伸的钉区域。 钉区与磁极分离。 近场换能器还包括位于磁极和钉区之间的结构。 该结构通过间隙与钉区分离。 该结构从扩大的区域向面向介质的表面延伸。 该结构被配置为将表面等离子体激元的产生延伸到磁极。

    NEAR-FIELD TRANSDUCER WITH ROUNDED OR OBTUSE CORNERS
    33.
    发明申请
    NEAR-FIELD TRANSDUCER WITH ROUNDED OR OBTUSE CORNERS 有权
    具有圆形或拐弯角的近场传感器

    公开(公告)号：US20150117169A1

    公开(公告)日：2015-04-30

    申请号：US14061934

    申请日：2013-10-24

    Applicant: Seagate Technology LLC

    Inventor： Michael Christopher Kautzky ,  James Gary Wessel ,  Mark Ostrowski ,  Tae-Woo Lee

    IPC: G11B5/187 ,  G11B5/48

    CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/124 ,  G11B7/126 ,  G11B13/08 ,  G11B2005/0021

    Abstract: Embodiments are directed to an apparatus having an air-bearing surface that is configured to interact with magnetic medium. The apparatus includes a waveguide and a plasmonic near-field transducer positioned at or near the air-bearing surface. The plasmonic near-field transducer is operatively coupled to the waveguide. The plasmonic near-field transducer includes an enlarged region and a peg region. The peg region extends from the enlarged region towards the air-bearing surface. The peg region has at least a portion of a periphery of its cross-sectional shape include curvature or at least one substantially obtuse angle.

    Abstract translation: 实施例涉及具有被配置为与磁介质相互作用的空气轴承表面的装置。 该装置包括位于空气承载表面处或附近的波导和等离子体近场换能器。 等离子体近场换能器可操作地耦合到波导。 等离子体激元近场换能器包括放大区域和钉区域。 销钉区域从扩大区域向空气轴承表面延伸。 钉区域具有其横截面形状的至少一部分周边包括曲率或至少一个基本钝角。

    Heat-assisted magnetic recording head with a heat sink having a liner
    38.
    发明授权
    Heat-assisted magnetic recording head with a heat sink having a liner 有权

    公开(公告)号：US11657844B1

    公开(公告)日：2023-05-23

    申请号：US17654878

    申请日：2022-03-15

    Applicant: Seagate Technology LLC

    Inventor： Tae-Woo Lee ,  Jiaoming Qiu

    IPC: G11B5/31 ,  G11B5/48 ,  G11B5/73 ,  G11B5/00

    CPC classification number: G11B5/7375 ,  G11B5/314 ,  G11B5/4866 ,  G11B2005/0021

    Abstract: A heat-assisted magnetic recording head includes a near-field transducer and a heat sink. The near-field transducer includes a middle disk and a near-field emitter. The near-field emitter includes a peg and an anchor disk. The peg is configured to produce a hot spot on a proximal magnetic disk. The peg is disposed proximal to a media-facing surface of the heat-assisted magnetic recording head. The anchor disk is disposed behind the peg relative to the media-facing surface. The heat sink includes a core and a liner. The core includes a primary metal, and the liner includes a primary metal. The liner is coupled to the core and is disposed along an outer surface of the core. The middle disk is disposed between and coupled to the liner and the anchor disk. The primary metal of the liner comprises at least one of iridium, rhodium, tantalum, tungsten, or ruthenium.

    System and method for far-field optical testing of heat-assisted recording heads
    39.
    发明授权
    System and method for far-field optical testing of heat-assisted recording heads 有权

    公开(公告)号：US11320367B1

    公开(公告)日：2022-05-03

    申请号：US17066562

    申请日：2020-10-09

    Applicant: Seagate Technology LLC

    Inventor： Raghu Ambekar Ramachandra Rao ,  Aaron Edward Patz ,  Tae-Woo Lee

    IPC: G01N21/21 ,  G01N21/39 ,  G11B5/455 ,  G11B5/00

    Abstract: A testing system includes a production-type laser having optical modes of a production laser that interfaces with an optical path of a heat-assisted magnetic recording (HAMR) slider. A far-field light illumination path delivers excitation light from the production-type laser to the optical path of the HAMR slider, the excitation light being emitted from an air bearing surface (ABS) of the HAMR slider. Optics receive the emitted light from the ABS and distribute the emitted light to one or more sensors. The system determines, based on signals received from the one or more sensors, a depolarization of the emitted light and a coupling efficiency of the HAMR slider. The system may also measure light reflecting out of the optical path and Fourier transform these measurements to determine locations of reflections within the optical path.

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