公开(公告)号：US09336800B2

公开(公告)日：2016-05-10

申请号：US14816341

申请日：2015-08-03

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Sarbeswar Sahoo ,  Michael Christopher Kautzky

IPC: G11B5/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/012 ,  G11B5/187 ,  G11B5/127 ,  G11B5/60 ,  G02B6/122 ,  G02B5/00

CPC classification number: G11B5/3163 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A near field transducer with a peg region, an enlarged region disposed adjacent the peg region, and a barrier material disposed between the peg region and the enlarged region. The barrier material reduces or eliminates interdiffusion of material between the peg region and the enlarged region.

公开(公告)号：US20160087401A1

公开(公告)日：2016-03-24

申请号：US14492785

申请日：2014-09-22

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Karim Tatah ,  Mourad Benakli

IPC: H01S5/068 ,  H01S5/026 ,  H01S5/065 ,  H01S5/06

CPC classification number: H01S5/06804 ,  G11B5/02 ,  G11B5/40 ,  G11B19/046 ,  G11B2005/0021 ,  H01S5/02453 ,  H01S5/0261 ,  H01S5/06216 ,  H01S5/0687

Abstract: An apparatus includes a laser diode, a heater arrangement, and a circuit. The laser diode is configured to facilitate heat assisted magnetic recording during a lasing state. The heater arrangement is positioned proximate the laser diode. The circuit electrically couples the laser diode and the heater arrangement in a parallel relationship. The circuit is configured to alternately operate the laser diode in a lasing state and a non-lasing state, and to activate the heater arrangement during the non-lasing state to warm a junction of the laser diode.

Abstract translation: 一种装置包括激光二极管，加热器装置和电路。 激光二极管被配置为在激光状态期间促进热辅助磁记录。 加热器装置位于激光二极管附近。 电路以平行关系电耦合激光二极管和加热器装置。 电路被配置为交替地操作激光二极管处于激光状态和非激光状态，并且在非激光状态期间激活加热器装置以加热激光二极管的结。

公开(公告)号：US20150340050A1

公开(公告)日：2015-11-26

申请号：US14816341

申请日：2015-08-03

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Sarbeswar Sahoo ,  Michael Christopher Kautzky

IPC: G11B5/31 ,  G11B5/48 ,  G11B5/60

CPC classification number: G11B5/3163 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A near field transducer with a peg region, an enlarged region disposed adjacent the peg region, and a barrier material disposed between the peg region and the enlarged region. The barrier material reduces or eliminates interdiffusion of material between the peg region and the enlarged region.

Abstract translation: 具有钉区域的近场换能器，邻近栓钉区域设置的放大区域，以及设置在钉区域和扩大区域之间的阻挡材料。 阻挡材料减少或消除了钉住区域和扩大区域之间材料的相互扩散。

公开(公告)号：US20150325261A1

公开(公告)日：2015-11-12

申请号：US14709705

申请日：2015-05-12

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  James Gary Wessel ,  Rachel Frakie ,  Chubing Peng ,  Werner Scholz ,  Chris Rea ,  Zoran Jandric ,  Mourad Benakli ,  Tae-Woo Lee

IPC: G11B5/48 ,  G02B6/02 ,  G02B6/122

CPC classification number: G11B5/6088 ,  G02B6/02042 ,  G02B6/02052 ,  G02B6/1226 ,  G02B2006/12121 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/4866 ,  G11B7/24062 ,  G11B2005/0021

Abstract: An apparatus is includes a near field transducer positioned adjacent a media-facing surface and at the end of a waveguide having at least one core layer and a cladding layer. The apparatus also includes at least one optical reflector positioned adjacent opposing cross-track edges of the near field transducer and/or adjacent a down-track side of the near-field transducer.

Abstract translation: 一种装置包括邻近面向介质的表面定位的近场传感器，以及位于具有至少一个芯层和包覆层的波导的端部。 该装置还包括至少一个光学反射器，其位于近场换能器的相对的交叉轨道边缘附近和/或邻近近场换能器的下轨道侧。

公开(公告)号：US09147406B1

公开(公告)日：2015-09-29

申请号：US14276159

申请日：2014-05-13

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel

IPC: G11B5/31

CPC classification number: G11B5/31 ,  G11B5/1278 ,  G11B5/3106 ,  G11B5/3133 ,  G11B2005/0021

Abstract: A write pole of a heat assisted magnetic recording (HAMR) write head includes a high moment magnetic material that extends from the write head toward an air barrier surface (ABS) of the write head. At least one stop layer is provided on or within the high moment magnetic material. The stop layer is situated at or near the ABS and is of a corrosion-resistant material.

Abstract translation: 热辅助磁记录（HAMR）写入头的写入极包括从写入头向写入头的空气阻挡表面（ABS）延伸的高力矩磁性材料。 至少一个停止层设置在高力矩磁性材料上或其内。 止挡层位于ABS附近或附近，并且是耐腐蚀材料。

公开(公告)号：US20210383831A1

公开(公告)日：2021-12-09

申请号：US17407658

申请日：2021-08-20

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Roger L. Hipwell, JR.

IPC: G11B13/08

Abstract: An apparatus comprises a slider configured to facilitate heat assisted magnetic recording and a submount affixed to the slider. A laser unit is affixed to the submount and comprises a laser operable in a non-lasing state and a lasing state. A heater is embedded in the laser unit or the submount. The heater is configured to generate preheat for heating the laser during the non-lasing state and to generate steering heat for heating the laser during the lasing state.

公开(公告)号：US11100951B2

公开(公告)日：2021-08-24

申请号：US16938101

申请日：2020-07-24

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Roger L. Hipwell, Jr.

IPC: G11B5/00 ,  G11B13/08

Abstract: An apparatus comprises a slider configured to facilitate heat assisted magnetic recording and a submount affixed to the slider. A laser unit is affixed to the submount and comprises a laser operable in a non-lasing state and a lasing state. A heater is embedded in the laser unit or the submount. The heater is configured to generate preheat for heating the laser during the non-lasing state and to generate steering heat for heating the laser during the lasing state.

公开(公告)号：US20210166727A1

公开(公告)日：2021-06-03

申请号：US17151401

申请日：2021-01-18

Applicant: Seagate Technology LLC

Inventor： Karim Tatah ,  Mourad Benakli ,  James Gary Wessel

IPC: G11B7/1263 ,  H01S5/068 ,  H01S5/06 ,  H01S5/026 ,  H01S5/065 ,  G11B5/02 ,  G11B5/40 ,  G11B5/455 ,  G11B5/09

Abstract: A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.

公开(公告)号：US20200118591A1

公开(公告)日：2020-04-16

申请号：US16591892

申请日：2019-10-03

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Roger L. Hipwell, JR.

IPC: G11B13/08

Abstract: An apparatus comprises a slider configured to facilitate heat assisted magnetic recording and a submount affixed to the slider. A laser unit is affixed to the submount and comprises a laser operable in a non-lasing state and a lasing state. A heater is embedded in the laser unit or the submount. The heater is configured to generate preheat for heating the laser during the non-lasing state and to generate steering heat for heating the laser during the lasing state.

公开(公告)号：US10410659B2

公开(公告)日：2019-09-10

申请号：US16272378

申请日：2019-02-11

Applicant: Seagate Technology LLC

Inventor： Gary Joseph Kunkel ,  Raul Horacio Andruet ,  James Gary Wessel

IPC: G11B5/17 ,  G11B5/31 ,  G11B5/40 ,  G11B5/187 ,  G11B5/00 ,  G11B5/012

Abstract: A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.