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    WAVEGUIDE CORE LAYER WITH REDUCED DOWNTRACK THICKNESS PROXIMATE A NEAR-FIELD TRANSDUCER
    71.
    发明申请
    WAVEGUIDE CORE LAYER WITH REDUCED DOWNTRACK THICKNESS PROXIMATE A NEAR-FIELD TRANSDUCER 审中-公开
    具有减小下降厚度的波导核心层替代近场传感器

    公开(公告)号：US20150302874A1

    公开(公告)日：2015-10-22

    申请号：US14691204

    申请日：2015-04-20

    Applicant: Seagate Technology LLC

    Inventor： Pierre Asselin ,  Ruoxi Yang ,  James Gary Wessel

    IPC: G11B5/48 ,  G11B5/31

    CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

    Abstract: An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. A waveguide has a core layer extending from an energy source to the media-facing surface. The core layer includes a region of reduced downtrack thickness proximate the near-field transducer. The region of reduced downtrack thickness is defined by a notch facing away from the near-field transducer. A material of the notch has a different index of refraction than an index of refraction of the core layer.

    Abstract translation: 一种装置包括靠近记录头的面向媒体的表面的写入磁极。 近场换能器与写柱相邻。 波导具有从能量源延伸到面向介质的表面的芯层。 核心层包括靠近近场换能器的减小的压缩厚度的区域。 减少下行横截面厚度的区域由远离近场传感器的凹口限定。 凹口的材料具有与芯层的折射率不同的折射率。

    NEAR-FIELD TRANSDUCER WITH ROUNDED OR OBTUSE CORNERS
    72.
    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。

    Method and apparatus for aligning a laser to a waveguide
    74.
    发明授权
    Method and apparatus for aligning a laser to a waveguide 有权
    用于将激光对准波导的方法和装置

    公开(公告)号：US08873903B2

    公开(公告)日：2014-10-28

    申请号：US13687435

    申请日：2012-11-28

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel

    IPC: G02B6/12 ,  G11B5/60 ,  G11B11/00 ,  G02B6/42 ,  G02B6/36 ,  G11B5/105

    CPC classification number: G02B6/4245 ,  B23K1/0016 ,  B23K1/20 ,  G02B6/3652 ,  G02B6/423 ,  G02B6/4231 ,  G02B6/4232 ,  G02B6/4233 ,  G02B6/4234 ,  G02B6/4236 ,  G02B6/4238 ,  G11B5/105 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: An apparatus includes a slider structure having a waveguide and a cavity configured to align a laser to the waveguide. The cavity includes a plurality of solder bumps on a bottom of the cavity configured to electrically and thermally couple the laser to the slider. At least one mechanical stopper is disposed in the cavity to facilitate vertical alignment between an output of the laser and an input of the waveguide. At least one solder bump is disposed on the mechanical stopper to facilitate lateral alignment between the output of the laser and the input of the waveguide in response to a reflow of the solder bumps.

    Abstract translation: 一种装置包括具有波导和被配置为将激光对准波导的空腔的滑块结构。 空腔包括在腔的底部上的多个焊料凸块，其被配置为将激光电连接和热耦合到滑块。 在空腔中设置至少一个机械止动件以便于激光器的输出和波导的输入之间的垂直对准。 至少一个焊料凸块设置在机械止动器上，以便响应于焊料凸块的回流而有助于激光器的输出和波导的输入之间的横向对准。

    Controlling head-media spacing using a write coil
    75.
    发明授权
    Controlling head-media spacing using a write coil 有权
    使用写入线圈控制磁头间距

    公开(公告)号：US08867323B2

    公开(公告)日：2014-10-21

    申请号：US13687282

    申请日：2012-11-28

    Applicant: Seagate Technology LLC

    Inventor： Raul Horacio Andruet ,  James Gary Wessel

    IPC: G11B11/00 ,  G11B17/32

    CPC classification number: G11B17/32 ,  G11B5/607 ,  G11B2005/0021

    Abstract: While a heat-assisted, magnetic recording media is not being written to, heat applied from a write head to the recording media to facilitate writing to the recording media is removed. Power is applied to a write coil of the write head to control spacing between the write head and the recording media when the recording media is not being written to.

    Abstract translation: 当热辅助磁记录介质未被写入时，从写入头向记录介质施加的热量便于写入记录介质。 当记录介质未被写入时，将功率施加到写入头的写入线圈以控制写入头和记录介质之间的间隔。

    Heat-assisted magnetic recording device incorporating laser diode temperature control using common-mode voltage
    78.
    发明授权
    Heat-assisted magnetic recording device incorporating laser diode temperature control using common-mode voltage 有权

    公开(公告)号：US10943608B1

    公开(公告)日：2021-03-09

    申请号：US16775503

    申请日：2020-01-29

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel

    IPC: G11B5/02 ,  G11B5/60 ,  G11B11/105 ,  G11B5/00

    Abstract: An apparatus comprises a slider configured to facilitate heat assisted magnetic recording. The slider comprises a plurality of bond pads including a first electrical bond pad, a second electrical bond pad, and a ground pad. A laser diode comprises an anode coupled to the first electrical bond pad and a cathode coupled to the second electrical bond pad. The laser diode is operable in a non-lasing state and a lasing state. A heater is coupled between the ground pad and at least one of the anode and cathode of the laser diode. The heater is configured to generate heat for heating the laser diode during the non-lasing state and the lasing state.

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