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。

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

IPC: G11B5/48 ,  G11B13/08 ,  G11B5/31 ,  G11B5/60 ,  G11B5/00

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.

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

IPC: G01B9/00 ,  G11B5/31 ,  G11B5/105 ,  G11B5/00

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.

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.

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。

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

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00

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。