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11.发明授权公开(公告)号：US10410668B1
公开(公告)日：2019-09-10
申请号：US16249452
申请日：2019-01-16
Applicant: Seagate Technology LLC
Inventor： Declan Macken , Tyler Lenn Perry , Karim Tatah , Andrei Dorobantu , Todd Michael Lammers
IPC: G11B5/00 , G11B7/1263 , G11B5/09 , G11B20/18 , G11B5/012
Abstract: A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change.
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12.发明授权公开(公告)号：US10255940B1
公开(公告)日：2019-04-09
申请号：US15408982
申请日：2017-01-18
Applicant: Seagate Technology LLC
Inventor： Declan Macken , Tyler Lenn Perry , Karim Tatah , Andrei Dorobantu , Todd Michael Lammers
IPC: G11B5/00 , G11B7/1263 , G11B5/09 , G11B20/18 , G11B5/012
Abstract: A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change.
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公开(公告)号：US09437229B2
公开(公告)日：2016-09-06
申请号：US14680252
申请日：2015-04-07
Applicant: Seagate Technology LLC
Inventor： Karim Tatah
CPC classification number: G11B5/4866 , G02B6/4208 , G11B5/105 , G11B5/314 , G11B5/6088 , G11B7/1384 , G11B2005/001 , G11B2005/0021 , H01S5/0064 , H01S5/02248 , H01S5/02284 , H01S5/34
Abstract: An apparatus with a slider body, a laser diode, and an isolator element. The slider body has an optical pathway extending therealong. The laser diode is configured to emit light along the optical pathway. The isolator element is disposed in the optical pathway to reduce optical feedback along the optical pathway back to the laser diode. In some embodiments, the isolator element is disposed in the optical pathway between the laser diode and the slider body.
Abstract translation: 具有滑块体，激光二极管和隔离元件的装置。 滑块体具有沿其延伸的光学通路。 激光二极管被配置为沿着光学路径发光。 隔离器元件设置在光路中，以减少沿着光学路径的光反馈回到激光二极管。 在一些实施例中，隔离器元件设置在激光二极管和滑块体之间的光学路径中。
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公开(公告)号：US20150364899A1
公开(公告)日：2015-12-17
申请号：US14619745
申请日：2015-02-11
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Pierre Asselin
CPC classification number: H01S5/141 , G11B5/6088 , G11B2005/0021 , H01S3/08009 , H01S5/005 , H01S5/0287
Abstract: A Bragg grating external cavity laser apparatus may comprise the combination of a slider and an external cavity laser. The slider includes a waveguide that delivers light to a recording media. The external cavity laser includes an active region with a reflective back facet and a front facet that is externally coupled to the waveguide of the slider. The external cavity laser additionally includes a Bragg grating within the waveguide of the slider where the reflective back facet and the Bragg grating operate to define a single resonator within the external cavity.
Abstract translation: 布拉格光栅外腔激光装置可以包括滑块和外腔激光器的组合。 滑块包括将光传送到记录介质的波导。 外腔激光器包括具有反射背面的有源区和外部耦合到滑块的波导的前小面。 外腔激光器还包括在滑块的波导内的布拉格光栅，其中反射背面和布拉格光栅操作以在外腔内限定单个谐振器。
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公开(公告)号：US20150340051A1
公开(公告)日：2015-11-26
申请号：US14286287
申请日：2014-05-23
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Michael Allen Seigler , Scott Eugene Olson , Delai Zhou
CPC classification number: H01S5/4068 , G02B6/00 , G11B5/3133 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B2005/001 , G11B2005/0021 , H01S5/4012 , H01S5/4031
Abstract: An apparatus comprises a unitary laser diode comprising an array of two or more active regions, at least one of which outputs a light beam in response to an input current. The apparatus also includes two or more waveguides, each waveguide corresponding to an active region of the array. At least one of the waveguides receives the at least one light beam from the at least one active region.
Abstract translation: 一种装置包括一个单一激光二极管，其包括两个或多个有源区的阵列，其中至少一个有源区响应于输入电流而输出光束。 该装置还包括两个或多个波导，每个波导对应于阵列的有源区。 至少一个波导从至少一个有源区域接收至少一个光束。
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Patent Agency Ranking
公开(公告)号：US09196278B1
公开(公告)日：2015-11-24
申请号：US14286287
申请日：2014-05-23
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Michael Allen Seigler , Scott Eugene Olson , Delai Zhou
CPC classification number: H01S5/4068 , G02B6/00 , G11B5/3133 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B2005/001 , G11B2005/0021 , H01S5/4012 , H01S5/4031
Abstract: An apparatus comprises a unitary laser diode comprising an array of two or more active regions, at least one of which outputs a light beam in response to an input current. The apparatus also includes two or more waveguides, each waveguide corresponding to an active region of the array. At least one of the waveguides receives the at least one light beam from the at least one active region.
Abstract translation: 一种装置包括一个单一激光二极管，其包括两个或多个有源区的阵列，其中至少一个有源区响应于输入电流而输出光束。 该装置还包括两个或多个波导，每个波导对应于阵列的有源区。 至少一个波导从至少一个有源区域接收至少一个光束。
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公开(公告)号：US20150295384A1
公开(公告)日：2015-10-15
申请号：US14680252
申请日：2015-04-07
Applicant: Seagate Technology LLC
Inventor： Karim Tatah
CPC classification number: G11B5/4866 , G02B6/4208 , G11B5/105 , G11B5/314 , G11B5/6088 , G11B7/1384 , G11B2005/001 , G11B2005/0021 , H01S5/0064 , H01S5/02248 , H01S5/02284 , H01S5/34
Abstract: An apparatus with a slider body, a laser diode, and an isolator element. The slider body has an optical pathway extending therealong. The laser diode is configured to emit light along the optical pathway. The isolator element is disposed in the optical pathway to reduce optical feedback along the optical pathway back to the laser diode. In some embodiments, the isolator element is disposed in the optical pathway between the laser diode and the slider body.
Abstract translation: 具有滑块体，激光二极管和隔离元件的装置。 滑块体具有沿其延伸的光学通路。 激光二极管被配置为沿着光学路径发光。 隔离器元件设置在光路中，以减少沿着光学路径的光反馈回到激光二极管。 在一些实施例中，隔离器元件设置在激光二极管和滑块体之间的光学路径中。
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公开(公告)号：US10325622B2
公开(公告)日：2019-06-18
申请号：US15947319
申请日：2018-04-06
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC: H01S5/06 , G11B7/1263 , H01S5/068 , H01S5/026 , H01S5/065 , G11B5/09 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/00 , H01S5/024 , H01S5/062
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.
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19.发明授权公开(公告)号：US10192578B1
公开(公告)日：2019-01-29
申请号：US16049331
申请日：2018-07-30
Applicant: Seagate Technology LLC
Inventor： Declan Macken , Tyler Lenn Perry , Karim Tatah , Andrei Dorobantu , Todd Michael Lammers
IPC: G11B5/00 , G11B7/1263 , G11B5/09 , G11B20/18 , G11B5/012
Abstract: A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change.
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公开(公告)号：US09799359B1
公开(公告)日：2017-10-24
申请号：US15464910
申请日：2017-03-21
Applicant: Seagate Technology LLC
Inventor： Scott Eugene Olson , Karim Tatah , Yi-Kuei Ryan Wu , Mark Anthony Gubbins , Marcus B. Mooney , Michael James Hardy
CPC classification number: G11B5/314 , G11B5/105 , G11B5/3163 , G11B5/6088 , G11B2005/0021
Abstract: 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.
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