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1. 发明授权

US11450346B2 Thermal management of laser diode mode hopping for heat assisted media recording 有权
公开(公告)号：US11450346B2
公开(公告)日：2022-09-20
申请号：US17151401
申请日：2021-01-18
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： H01S5/024 , G11B7/1263 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/09 , H01S5/062 , G11B5/00
摘要： 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.

2. 发明授权

US10540998B2 Thermal management of laser diode mode hopping for heat assisted media recording 有权
公开(公告)号：US10540998B2
公开(公告)日：2020-01-21
申请号：US16399095
申请日：2019-04-30
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： H01S5/065 , G11B7/1263 , H01S5/068 , H01S5/026 , H01S5/06 , G11B5/455 , G11B5/09 , G11B5/02 , G11B5/40 , G11B5/00 , H01S5/062 , H01S5/024
摘要： 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.

3. 发明授权

US09940965B2 Thermal management of laser diode mode hopping for heat assisted media recording 有权
公开(公告)号：US09940965B2
公开(公告)日：2018-04-10
申请号：US15061166
申请日：2016-03-04
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： G11B7/1263 , G11B5/09 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/00 , H01S5/024 , H01S5/062
CPC分类号： G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
摘要： 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.

4. 发明授权

US09607638B1 Recording head with an on-wafer integrated laser 有权
公开(公告)号：US09607638B1
公开(公告)日：2017-03-28
申请号：US14946294
申请日：2015-11-19
申请人： Seagate Technology LLC
发明人： Scott Eugene Olson , Karim Tatah , Yi-Kuei Ryan Wu , Mark Gubbins , Marcus B. Mooney , Michael J. Hardy
IPC分类号： G11B7/135 , G11B5/48
CPC分类号： G11B5/314 , G11B5/105 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A recording head includes a layer of plasmonic metal deposited on a surface of the recording head. One or more non-self-supporting layers of crystalline material are attached to the plasmonic metal, the one or more layers of crystalline materials configured to form an active region of a laser. A waveguide is configured to receive plasmons from the laser and direct the plasmons to a recording medium.

5. 发明授权

US08923101B1 Monolithically integrated laser diode and power monitor 有权
标题翻译：单片集成激光二极管和功率监视器
公开(公告)号：US08923101B1
公开(公告)日：2014-12-30
申请号：US14029052
申请日：2013-09-17
申请人： Seagate Technology LLC
发明人： Karim Tatah , Michael Allen Seigler
IPC分类号： G11B11/00
CPC分类号： G11B5/455 , G11B5/314 , G11B2005/0021
摘要： An apparatus includes a slider body, a write element, and a laser chip. The write element is disposed on the slider body and is configured to apply a magnetic field to write data on a portion of a heat-assisted magnetic recording media in response to an energizing current. The laser chip has a laser diode with an active region configured to produce light. The laser diode adapted to inject the light to the proximate the read/write element. The laser chip additionally has a photodetector The photodetector is adapted to monitor light from the laser diode. The photodetector shares a same active region as the laser diode and the laser diode and photodetector are integrated together on the same laser chip.
摘要翻译：一种装置包括滑块体，写入元件和激光芯片。写入元件设置在滑块主体上，并且被配置为响应于通电电流而施加磁场以将数据写入热辅助磁记录介质的一部分上。激光芯片具有激光二极管，其具有被配置为产生光的有源区域。激光二极管适于将光注入到靠近读/写元件。激光芯片还具有光电检测器。光电检测器适于监测来自激光二极管的光。光电检测器具有与激光二极管相同的有源区域，并且激光二极管和光电检测器在相同的激光芯片上集成在一起。

6. 发明申请

US20210166727A1 THERMAL MANAGEMENT OF LASER DIODE MODE HOPPING FOR HEAT ASSISTED MEDIA RECORDING 有权
公开(公告)号：US20210166727A1
公开(公告)日：2021-06-03
申请号：US17151401
申请日：2021-01-18
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： G11B7/1263 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/09
摘要： 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.

7. 发明申请

US20180233171A1 THERMAL MANAGEMENT OF LASER DIODE MODE HOPPING FOR HEAT ASSISTED MEDIA RECORDING 审中-公开
公开(公告)号：US20180233171A1
公开(公告)日：2018-08-16
申请号：US15947319
申请日：2018-04-06
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： G11B7/1263
CPC分类号： G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
摘要： 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.

8. 发明授权

US09905996B2 Heat assisted media recording device with reduced likelihood of laser mode hopping 有权
公开(公告)号：US09905996B2
公开(公告)日：2018-02-27
申请号：US14492785
申请日：2014-09-22
申请人： Seagate Technology LLC
发明人： James Gary Wessel , Karim Tatah , Mourad Benakli
IPC分类号： H01S3/04 , H01S5/068 , H01S5/026 , G11B5/02 , G11B5/40 , G11B19/04 , H01S5/024 , H01S5/062 , H01S5/0687 , G11B5/00
CPC分类号： H01S5/06804 , G11B5/02 , G11B5/40 , G11B19/046 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/06216 , H01S5/0687
摘要： 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.

9. 发明申请

US20160171991A1 ATTACHING OPTICAL COMPONENTS USING HOMOGENIZED LASER LIGHT 审中-公开
公开(公告)号：US20160171991A1
公开(公告)日：2016-06-16
申请号：US15052987
申请日：2016-02-25
申请人： Seagate Technology LLC
发明人： Brent C. Roeger , Karim Tatah
IPC分类号： G11B5/127 , B23K26/06 , B23K26/073 , B23K1/005
CPC分类号： G11B5/1272 , B23K1/0056 , B23K26/0643 , B23K26/0648 , B23K26/0652 , B23K26/073 , G11B5/105 , G11B5/4806 , G11B2005/0021
摘要： An attachable optical component is aligned with a base optical component. The attachable optical component has a mounting surface interfacing with the base optical component and an exposed surface opposed to the mounting surface. Laser light is directed to the exposed surface of the attachable optical component for delivery to the mounting surface. The attachable optical component guides and homogenizes the laser light delivered to the mounting surface and uniformly heats a bonding feature between the mounting surface and the base optical component. The directing and subsequent removing of the laser light bonds the attachable optical component to the base optical component via the bonding feature

10. 发明授权

US11961543B2 Thermal management of laser diode mode hopping for heat assisted media recording 有权
公开(公告)号：US11961543B2
公开(公告)日：2024-04-16
申请号：US17898936
申请日：2022-08-30
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： H01S5/06 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B7/1263 , H01S5/024 , H01S5/026 , H01S5/065 , H01S5/068 , G11B5/00 , H01S5/062
CPC分类号： G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , H01S5/0261 , H01S5/0612 , H01S5/0651 , H01S5/06804 , H01S5/06808 , G11B2005/0021 , H01S5/02453 , H01S5/0617 , H01S5/06216
摘要： 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.

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