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公开(公告)号：US09245551B2
公开(公告)日：2016-01-26
申请号：US14661558
申请日：2015-03-18
Applicant: Seagate Technology LLC
Inventor： Fadi El Hallak , Marcus B. Mooney
Abstract: A sensor may be configured with a nanocrystal that has a nitrogen-vacancy. The nanocrystal can be positioned proximal a magnetic source, mount, and articulable stage. Various embodiments configure the articulable stage configured to align the nanocrystal and the magnetic source along a common axis to sense magnetic fields about the magnetic source with a sub-nanometer resolution.
Abstract translation: 传感器可以配置有具有氮空位的纳米晶体。 纳米晶体可以定位在磁源，安装和铰接阶段附近。 各种实施例配置可配置阶段，其被配置为沿着公共轴对准纳米晶体和磁源，以用亚纳米分辨率感测关于磁源的磁场。
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公开(公告)号：US11588302B2
公开(公告)日：2023-02-21
申请号：US16449302
申请日：2019-06-21
Applicant: Seagate Technology LLC
Inventor： Mark A. Gubbins , Marcus B. Mooney , Aidan D. Goggin , Paula F. McElhinney , Debra A. McNeill , Fadi El Hallak , Brendan Lafferty
IPC: H04Q11/00 , H01S5/02325 , H01S5/50 , H01S5/024 , H01S5/30
Abstract: Exemplary methods and apparatus may provide optical gates and optical switches using such optical gates. Each optical gate may include a semiconductor optical amplifier that is placed in a substrate. The semiconductor optical amplifier may be coupled to input and output couplers to receive and selectively output optical signals into and out of the substrate.
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公开(公告)号：US20180040342A1
公开(公告)日：2018-02-08
申请号：US15784429
申请日：2017-10-16
Applicant: Seagate Technology LLC
Inventor： Aidan Dominic Goggin , Kelly Elizabeth Hamilton , Paula Frances McElhinney , Fadi El Hallak
IPC: G11B5/48 , G02B6/126 , G02B6/132 , G02B6/122 , G02B6/27 , G02B6/136 , G11B5/00 , G11B5/60 , G11B7/1387 , G11B11/105
CPC classification number: G11B5/4866 , G02B6/1228 , G02B6/126 , G02B6/132 , G02B6/136 , G02B6/2726 , G02B6/2766 , G11B5/6088 , G11B7/1387 , G11B11/10506 , G11B11/1051 , G11B2005/0021
Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction. The cross sectional area of the second layer is smaller proximate to the input coupler and larger proximate to the NFT.
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公开(公告)号：US12236986B2
公开(公告)日：2025-02-25
申请号：US18537957
申请日：2023-12-13
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Christopher Neil Harvey , Aidan Dominic Goggin , Fadi El Hallak , Reshma Anamari Mohandas , Bryn John Howells , Scott Eugene Olson
Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.
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公开(公告)号：US10895684B2
公开(公告)日：2021-01-19
申请号：US16449016
申请日：2019-06-21
Applicant: Seagate Technology LLC
Inventor： Mark A. Gubbins , Richard C. A. Pitwon , Aidan D. Goggin , Marcus B. Mooney , Reyad Mehfuz , Fadi El Hallak , Paula F. McElhinney , Brendan Lafferty , Kelly E. Callan
Abstract: A method, and apparatus provided thereby, includes providing a substrate and placing an integrated laser on the substrate. A first cladding layer surrounds the integrated laser and includes a laser optical coupler aligned with an output of the laser. The laser optical coupler includes silicon and the laser includes a III-V compound semiconductor. The output of the laser is spaced apart from the laser optical coupler by a gap of less than or equal to 500 nanometers. An optical waveguide is positioned on the first cladding layer and in optical communication with the laser optical coupler.
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Patent Agency Ranking
公开(公告)号：US20240112696A1
公开(公告)日：2024-04-04
申请号：US18537957
申请日：2023-12-13
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Christopher Neil Harvey , Aidan Dominic Goggin , Fadi El Hallak , Reshma Anamari Mohandas , Bryn John Howells , Scott Eugene Olson
CPC classification number: G11B5/6088 , G11B5/314 , G11B5/4866 , G11B7/126 , G11B13/08 , G11B2005/0021
Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.
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公开(公告)号：US11328744B1
公开(公告)日：2022-05-10
申请号：US17162182
申请日：2021-01-29
Applicant: Seagate Technology LLC
Inventor： Fadi El Hallak , Michael Gerald Boyle , Paula Frances McElhinney , Marcus Benedict Mooney , Aidan Dominic Goggin , Cillian Macdara OBriain Fallon
Abstract: An apparatus comprises a substrate. A laser is deposited above the substrate. The laser includes one or more non-self-supporting layers of crystalline material. A metallic adhesive is disposed between the laser and the substrate. The metallic adhesive is configured to adhere the laser to the substrate. A waveguide is deposited proximate the laser. The waveguide is configured to receive light from the laser and direct the light to a recording medium.
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公开(公告)号：US10127938B2
公开(公告)日：2018-11-13
申请号：US15784429
申请日：2017-10-16
Applicant: Seagate Technology LLC
Inventor： Aidan Dominic Goggin , Kelly Elizabeth Hamilton , Paula Frances McElhinney , Fadi El Hallak
IPC: G11B11/00 , G11B5/48 , G02B6/136 , G02B6/132 , G02B6/122 , G02B6/126 , G02B6/27 , G11B11/105 , G11B5/60 , G11B7/1387 , G11B5/00
Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction. The cross sectional area of the second layer is smaller proximate to the input coupler and larger proximate to the NFT.
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公开(公告)号：US20150269957A1
公开(公告)日：2015-09-24
申请号：US14661558
申请日：2015-03-18
Applicant: Seagate Technology LLC
Inventor： Fadi El Hallak , Marcus B. Mooney
Abstract: A sensor may be configured with a nanocrystal that has a nitrogen-vacancy. The nanocrystal can be positioned proximal a magnetic source, mount, and articulable stage. Various embodiments configure the articulable stage configured to align the nanocrystal and the magnetic source along a common axis to sense magnetic fields about the magnetic source with a sub-nanometer resolution.
Abstract translation: 传感器可以配置有具有氮空位的纳米晶体。 纳米晶体可以定位在磁源，安装和铰接阶段附近。 各种实施例配置可配置阶段，其被配置为沿着公共轴对准纳米晶体和磁源，以用亚纳米分辨率感测关于磁源的磁场。
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公开(公告)号：US11908499B1
公开(公告)日：2024-02-20
申请号：US17809722
申请日：2022-06-29
Applicant: Seagate Technology LLC
Inventor： Mark Gubbins , Christopher Neil Harvey , Aidan Goggin , Fadi El Hallak , Reshma Anamari Mohandas , Bryn John Howells , Scott Eugene Olson
CPC classification number: G11B5/6088 , G11B5/314 , G11B5/4866 , G11B7/126 , G11B13/08 , G11B2005/0021
Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.
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