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    Optically opaque overlay for a waveguide of a heat-assisted magnetic recording slider
    41.
    发明授权
    Optically opaque overlay for a waveguide of a heat-assisted magnetic recording slider 有权

    公开(公告)号：US10127937B1

    公开(公告)日：2018-11-13

    申请号：US15433235

    申请日：2017-02-15

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel ,  Zoran Jandric

    IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00 ,  G11B5/60

    Abstract: A slider having an air bearing surface is configured for heat-assisted magnetic recording (HAMR). The slider comprises a write pole, a near-field transducer (NFT) proximate the write pole, a return pole magnetically coupled to the write pole, and an optical waveguide configured to receive light from a light source and couple the light to the NFT. The optical waveguide comprises first and second opposing major surfaces and opposing first and second edges connected to the first and second major surfaces. An optically opaque overlay is disposed on one or both of the first and second major surfaces of the optical waveguide. The optically opaque overlay can be light reflective or light absorbing.

    Bolometer with low scattering for a heat-assisted magnetic recording slider
    44.
    发明授权
    Bolometer with low scattering for a heat-assisted magnetic recording slider 有权

    公开(公告)号：US09870787B1

    公开(公告)日：2018-01-16

    申请号：US15491592

    申请日：2017-04-19

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel ,  Chen Wang

    IPC: G11B5/02 ,  G11B11/00 ,  G11B5/31 ,  G01J5/08 ,  G01J5/10 ,  G11B5/48 ,  G11B5/00

    CPC classification number: G11B5/314 ,  G01J5/0818 ,  G01J5/10 ,  G01J5/20 ,  G11B5/4866 ,  G11B2005/0021

    Abstract: A slider configured for heat-assisted magnetic recording has an upper surface, an opposing air bearing surface (ABS), and a body defined between the upper surface and the ABS. The slider comprises a write pole and a near-field transducer (NFT) at or near the ABS. An optical waveguide is configured to receive light from a laser source and comprises a first cladding layer, a second cladding layer, and a core between the first and second cladding layers. The core has a width, a length, and a longitudinal axis oriented along the length of the core. A bolometer is situated within the body of the slider at a location that receives at least some of the light communicated along the waveguide used during a writing operation. The bolometer is spaced apart from the core and comprises a longitudinal axis that is oriented substantially parallel to the longitudinal axis of the core.

    Method and apparatus for aligning a laser to a waveguide
    47.
    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：US09091828B2

    公开(公告)日：2015-07-28

    申请号：US14525422

    申请日：2014-10-28

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel

    IPC: G02B6/12 ,  G11B5/60 ,  G11B11/00 ,  G02B6/42 ,  G11B5/105 ,  B23K1/00 ,  B23K1/20 ,  G02B6/36 ,  G11B5/00

    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。

    METHOD AND APPARATUS FOR ALIGNING A LASER TO A WAVEGUIDE
    48.
    发明申请
    METHOD AND APPARATUS FOR ALIGNING A LASER TO A WAVEGUIDE 审中-公开
    用于将激光对准波导的方法和装置

    公开(公告)号：US20150041523A1

    公开(公告)日：2015-02-12

    申请号：US14525422

    申请日：2014-10-28

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel

    IPC: G02B6/42 ,  B23K1/20 ,  B23K1/00

    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。

    Multi-portion heat sink for use with write pole and near-field transducer
    49.
    发明授权
    Multi-portion heat sink for use with write pole and near-field transducer 有权
    用于写磁极和近场传感器的多部分散热器

    公开(公告)号：US08923100B1

    公开(公告)日：2014-12-30

    申请号：US14024329

    申请日：2013-09-11

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel ,  Zoran Jandric ,  Chris Cote

    IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00

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

    Abstract: An apparatus (e.g., a heat assisted magnetic recording write heat) includes a magnetic write pole having a tip portion proximate a media-facing surface. A near-field transducer is proximate the tip portion of the magnetic write pole. A first heat sink portion is provided along a first side of the tip portion that faces away from the near field transducer. The first heat sink portion includes a highly reflective, thermally conductive metal and is spaced away from the media facing surface. A second heat sink portion is provided along the first side of the tip portion between the media facing surface and the first heat sink portion. The second heat sink portion includes a relatively hard material.

    Abstract translation: 一种装置（例如，热辅助磁记录写入热）包括具有靠近面向介质表面的尖端部分的磁性写入极。 近场换能器靠近磁写柱的尖端部分。 第一散热部分沿尖端部分的远离近场传感器的第一侧设置。 第一散热器部分包括高反射性导热金属，并且与介质相对表面间隔开。 第二散热部分沿着介质对向表面和第一散热部分之间的尖端部分的第一侧设置。 第二散热器部分包括相对硬的材料。

    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION
    50.
    发明申请
    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION 审中-公开
    具有多电阻温度传感器的头传感器用于中间间隔和接触检测

    公开(公告)号：US20140355150A1

    公开(公告)日：2014-12-04

    申请号：US14457694

    申请日：2014-08-12

    Applicant: Seagate Technology LLC

    Inventor： Michael Thomas Johnson ,  Dongming Liu ,  Huazhou Lou ,  Declan Macken ,  Timothy William Stoebe ,  James Gary Wessel ,  Xuan Zheng

    IPC: G11B5/60

    CPC classification number: G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

    Abstract: A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (TCR) and configured to produce a first sensor signal, and a second sensor having a TCR and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact. Each of the sensors may have a TCR with the same sign (positive or negative) or each sensor may have a TCR with a different sign.

    Abstract translation: 被配置为与磁记录介质相互作用的头传感器包括具有温度系数电阻（TCR）并被配置为产生第一传感器信号的第一传感器，以及具有TCR并被配置为产生第二传感器信号的第二传感器 。 第一传感器和第二传感器中的一个位于头部换能器相对于磁记录介质的接近点附近，并且第一传感器和第二传感器中的另一个与近端点间隔开。 电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。 每个传感器可以具有相同符号（正或负）的TCR，或者每个传感器可以具有不同符号的TCR。

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