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公开(公告)号：US20150036137A1
公开(公告)日：2015-02-05
申请号：US13959440
申请日：2013-08-05
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Amit Sharma , Kaspar Ko
IPC: G01B9/00
CPC classification number: G11B5/3166 , G11B5/105 , G11B2005/0021
Abstract: Alignment of a near field transducer (NFT) optical input coupler and a light emitting device involves providing excitation radiation from an excitation light source through an optical input coupler to the NFT and filtering output radiation from the NFT using a short wavelength pass optical filter. The optical input coupler is scanned through multiple positions while the photoluminescent radiation is detected. A first alignment position between the NFT input coupler and the excitation light source is identified based on the detected photoluminescent radiation. A light emitting device is scanned through multiple positions the light output is detected by a detector. A second alignment position between the light emitting device and the detector is identified. The first and second alignment positions are used to align the light emitting device with the optical input coupler.
Abstract translation: 近场传感器（NFT）光输入耦合器和发光器件的对准涉及通过光输入耦合器将激发光源通过光输入耦合器提供给NFT，并使用短波长通滤光片滤波来自NFT的输出辐射。 当检测到光致发光辐射时，光输入耦合器被扫描多个位置。 基于检测到的光致发光辐射来识别NFT输入耦合器和激发光源之间的第一对准位置。 通过检测器检测出光输出的多个位置扫描发光器件。 识别发光器件和检测器之间的第二对准位置。 第一和第二对准位置用于将发光器件与光输入耦合器对准。
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公开(公告)号：US09042061B2
公开(公告)日：2015-05-26
申请号：US14020408
申请日：2013-09-06
Applicant: Seagate Technology LLC
Inventor： Dimitar Velikov Dimitrov , Dian Song , Mark Thomas Kief , Amit Sharma
CPC classification number: G11B5/3929 , G11B5/3903 , G11B5/398
Abstract: A data reader may be configured at least with a magnetic stack positioned on an air bearing surface (ABS) and contacting a spin depolarizing layer that is a minority spin current carrier. The spin depolarizing layer can have a thickness and spin diffusion length corresponding to a net zero spin polarization at an interface of the magnetic stack and spin depolarizing layer.
Abstract translation: 数据读取器可以至少配置在位于空气轴承表面（ABS）上的磁性堆叠并且接触作为少数自旋电流载体的自旋去极化层。 自旋去极化层可以具有对应于磁性堆叠和自旋去极化层的界面处的净零自旋极化的厚度和自旋扩散长度。
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公开(公告)号：US20150063087A1
公开(公告)日：2015-03-05
申请号：US14016441
申请日：2013-09-03
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Nils Gokemeijer , Yuhang Cheng , Kaspar Ko , Amit Sharma
IPC: G11B5/48
CPC classification number: G11B5/4866 , G11B5/314 , G11B5/6088 , G11B13/08 , G11B2005/0021
Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.
Abstract translation: 提供了一种用于表征并入到HAMR磁记录器的写入头中的近场换能器的钉区的方法。 该方法包括向一个或多个近场换能器提供激发辐射。 近场换能器包括放大的盘区域和至少部分地与放大的盘区域接触的钉区域。 该方法还包括通过使由近场换能器发射的光致发光辐射的一部分响应于激发辐射而过滤来自近场换能器的输出辐射并且基本上阻挡由近场换能器传输的激发辐射。 该方法还包括检测光致发光辐射的部分并表征多个近场换能器中的至少一个的束区。
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公开(公告)号：US08958271B1
公开(公告)日：2015-02-17
申请号：US14016441
申请日：2013-09-03
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Nils Gokemeijer , Yuhang Cheng , Kaspar Ko , Amit Sharma
CPC classification number: G11B5/4866 , G11B5/314 , G11B5/6088 , G11B13/08 , G11B2005/0021
Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.
Abstract translation: 提供了一种用于表征并入到HAMR磁记录器的写入头中的近场换能器的钉区的方法。 该方法包括向一个或多个近场换能器提供激发辐射。 近场换能器包括放大的盘区域和至少部分地与放大的盘区域接触的钉区域。 该方法还包括通过使由近场换能器发射的光致发光辐射的一部分响应于激发辐射而过滤来自近场换能器的输出辐射并且基本上阻挡由近场换能器传输的激发辐射。 该方法还包括检测光致发光辐射的部分并表征多个近场换能器中的至少一个的束区。
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公开(公告)号：US09396748B2
公开(公告)日：2016-07-19
申请号：US14624066
申请日：2015-02-17
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Nils Gokemeijer , Yuhang Cheng , Kaspar Ko , Amit Sharma
CPC classification number: G11B5/4866 , G11B5/314 , G11B5/6088 , G11B13/08 , G11B2005/0021
Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.
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Patent Agency Ranking
公开(公告)号：US20150070800A1
公开(公告)日：2015-03-12
申请号：US14022282
申请日：2013-09-10
Applicant: Seagate Technology LLC
Inventor： Dimitar Velikov Dimitrov , Dian Song , Mark Thomas Kief , Amit Sharma
IPC: G11B5/31
CPC classification number: G11B5/3909 , G11B5/374 , G11B5/3929 , G11B5/398 , G11B2005/3996
Abstract: A data reader may be configured at least with detector and injector stacks that each has a common spin accumulation layer. The detector stack may positioned on an air bearing surface (ABS) while the injector stack is positioned distal the ABS. The injector stack can have a diffusive layer with a larger spin diffusion length than mean free path.
Abstract translation: 数据读取器可以至少配置有每个具有公共自旋累积层的检测器和注射器堆叠。 检测器堆可以位于空气轴承表面（ABS）上，同时喷射器堆叠位于ABS的远侧。 注射器堆叠可以具有比平均自由程更大的自旋扩散长度的扩散层。
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公开(公告)号：US09613643B2
公开(公告)日：2017-04-04
申请号：US13959440
申请日：2013-08-05
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Amit Sharma , Kaspar Ko
CPC classification number: G11B5/3166 , G11B5/105 , G11B2005/0021
Abstract: Alignment of a near field transducer (NFT) optical input coupler and a light emitting device involves providing excitation radiation from an excitation light source through an optical input coupler to the NFT and filtering output radiation from the NFT using a short wavelength pass optical filter. The optical input coupler is scanned through multiple positions while the photoluminescent radiation is detected. A first alignment position between the NFT input coupler and the excitation light source is identified based on the detected photoluminescent radiation. A light emitting device is scanned through multiple positions the light output is detected by a detector. A second alignment position between the light emitting device and the detector is identified. The first and second alignment positions are used to align the light emitting device with the optical input coupler.
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公开(公告)号：US20150187378A1
公开(公告)日：2015-07-02
申请号：US14624066
申请日：2015-02-17
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Nils Gokemeijer , Yuhang Cheng , Kaspar Ko , Amit Sharma
IPC: G11B5/48
CPC classification number: G11B5/4866 , G11B5/314 , G11B5/6088 , G11B13/08 , G11B2005/0021
Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.
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公开(公告)号：US09064509B2
公开(公告)日：2015-06-23
申请号：US14022282
申请日：2013-09-10
Applicant: Seagate Technology LLC
Inventor： Dimitar Velikov Dimitrov , Dian Song , Mark Thomas Kief , Amit Sharma
CPC classification number: G11B5/3909 , G11B5/374 , G11B5/3929 , G11B5/398 , G11B2005/3996
Abstract: A data reader may be configured at least with detector and injector stacks that each has a common spin accumulation layer. The detector stack may positioned on an air bearing surface (ABS) while the injector stack is positioned distal the ABS. The injector stack can have a diffusive layer with a larger spin diffusion length than mean free path.
Abstract translation: 数据读取器可以至少配置有每个具有公共自旋累积层的检测器和注射器堆叠。 检测器堆可以位于空气轴承表面（ABS）上，同时喷射器堆叠位于ABS的远侧。 注射器堆叠可以具有比平均自由程更大的自旋扩散长度的扩散层。
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公开(公告)号：US20150070799A1
公开(公告)日：2015-03-12
申请号：US14020408
申请日：2013-09-06
Applicant: Seagate Technology LLC
Inventor： Dimitar Velikov Dimitrov , Dian Song , Mark Thomas Kief , Amit Sharma
IPC: G11B5/31
CPC classification number: G11B5/3929 , G11B5/3903 , G11B5/398
Abstract: A data reader may be configured at least with a magnetic stack positioned on an air bearing surface (ABS) and contacting a spin depolarizing layer that is a minority spin current carrier. The spin depolarizing layer can have a thickness and spin diffusion length corresponding to a net zero spin polarization at an interface of the magnetic stack and spin depolarizing layer.
Abstract translation: 数据读取器可以至少配置在位于空气轴承表面（ABS）上的磁性堆叠并且接触作为少数自旋电流载体的自旋去极化层。 自旋去极化层可以具有对应于磁性堆叠和自旋去极化层的界面处的净零自旋极化的厚度和自旋扩散长度。
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