公开(公告)号：US20150194172A1

公开(公告)日：2015-07-09

申请号：US14151356

申请日：2014-01-09

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Lien Lee ,  Chang Xie

IPC: G11B5/48

CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A waveguide has an input end near a top of a slider coupled to receive light from an energy source. The waveguide delivers the light at an output end of the waveguide near a bottom of the slider. The apparatus includes light blocking members on respective first and second cross track sides of the waveguide. The light blocking members are configured to block stray light away from a light path. The light blocking members are at a location along a length of the waveguide between the top and the bottom of the slider. Confinement of light within the waveguide is near a maximum at the location.

Abstract translation: 波导具有靠近滑块的顶部的输入端，其耦合以接收来自能量源的光。 波导将光输送到靠近滑块底部的波导的输出端。 该装置包括在波导的相应的第一和第二十字轨道侧上的遮光构件。 遮光构件被构造成阻挡杂散光远离光路。 光阻挡构件位于沿着滑块的顶部和底部之间的波导长度的位置。 波导内部的光的限制在该位置处接近最大值。

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。

公开(公告)号：US20140334277A1

公开(公告)日：2014-11-13

申请号：US13890121

申请日：2013-05-08

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Bernard W. Bell ,  Chubing Peng

IPC: G11B13/08

CPC classification number: G11B13/08 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B11/105 ,  G11B11/10536 ,  G11B2005/0021

Abstract: A light delivery system in a slider includes a channel waveguide, a mode-index refractive surface, a solid immersion mirror, and a near field transducer. The mode-index refractive surface shapes the angular spectrum of the light on its path to the solid immersion mirror in a manner so as to change the distribution of light energy focused on to the near field transducer.

Abstract translation: 滑块中的光输送系统包括通道波导，模式折射率折射表面，固体浸没镜和近场换能器。 模式折射率折射表面以使得聚焦到近场传感器上的光能的分布改变的方式将光在其到固体浸没镜的路径上的角度光谱形状化。

公开(公告)号：US08873349B2

公开(公告)日：2014-10-28

申请号：US13792333

申请日：2013-03-11

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B11/00 ,  G11B5/31 ,  F21V8/00 ,  G11B13/08 ,  G11B5/00

CPC classification number: G02B6/028 ,  G02B6/0065 ,  G02B6/122 ,  G11B5/314 ,  G11B13/08 ,  G11B2005/0021

Abstract: A waveguide including a top cladding layer, the top cladding layer including a material having an index of refraction, n1; an assistant layer, the assistant layer positioned adjacent the top cladding layer, the assistant layer including a material having an index of refraction, n2; a core layer, the core layer positioned adjacent the assistant layer, the core layer including a material having an index of refraction, n3; and a bottom cladding layer, the bottom cladding layer positioned adjacent the core layer, the bottom cladding layer including a material having an index of refraction, n4, wherein n1 is less than both n2 and n3, n3 is greater than n1 and n4, and n4 is less than n3 and n2.

Abstract translation: 包括顶部包层的波导，所述顶部包层包括具有折射率的材料，n1; 辅助层，辅助层位于顶层包层附近，辅助层包括具有折射率的材料n2; 芯层，芯层位于辅助层附近，芯层包括具有折射率的材料n3; 以及下包层，所述底包层位于所述芯层附近，所述底包层包括具有折射率的材料，n4，其中n1小于n2和n3，n3大于n1和n4，以及 n4小于n3和n2。

公开(公告)号：US08824086B2

公开(公告)日：2014-09-02

申请号：US13903311

申请日：2013-05-28

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Kaizhong Gao ,  Lien Lee ,  Amit Itagi ,  Michael Allen Seigler ,  Yimin Niu ,  Sethuraman Jayashankar

IPC: G11B7/135

CPC classification number: G11B5/4866 ,  G11B5/3133 ,  G11B5/6088 ,  G11B13/08 ,  G11B2005/0021

Abstract: An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side plates on a substrate-parallel plane with a gap therebetween. The gap is disposed along the substrate-parallel plane and has an input end disposed proximate the transducer region and an output end. The transducer is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received by the waveguide.

Abstract translation: 一种装置包括配置成将光传送到换能器区域的波导。 该装置还包括等离子体激元换能器，其具有在基板平行平面上被配置为并排板的两个金属元件，其间具有间隙。 该间隙沿衬底平行平面设置并具有设置在换能器区域附近的输入端和输出端。 换能器被配置为响应于由波导接收的光提供靠近输出端的表面等离子体增强近场辐射图。

公开(公告)号：US20140177407A1

公开(公告)日：2014-06-26

申请号：US13722036

申请日：2012-12-20

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Chubing Peng ,  Edward Charles Gage

IPC: G11B13/04

CPC classification number: G11B13/04 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A light delivery system in a slider includes a channel waveguide, a solid immersion mirror, a near field transducer, and a planar waveguide assembly. The solid immersion mirror focuses light to the near field transducer. In one implementation, the slider includes a first reflective element and a second reflective element formed in the slider to induce an offset between a light source and the near field transducer. The reflective elements redirect light received from a light source between the reflective elements to a focusing element (e.g., a solid immersion mirror) focused on a near field transducer. The reflective elements translate the light in accordance with the offset between the light source and the near field transducer.

Abstract translation: 滑块中的光输送系统包括通道波导，固体浸没镜，近场换能器和平面波导组件。 固体浸没镜将光聚焦到近场传感器。 在一个实施方案中，滑块包括形成在滑块中的第一反射元件和第二反射元件，以引起光源和近场换能器之间的偏移。 反射元件将从光源接收的光反射到聚焦在近场换能器上的聚焦元件（例如，固体浸没镜）之间。 反射元件根据光源和近场传感器之间的偏移平移光。

公开(公告)号：US11120824B1

公开(公告)日：2021-09-14

申请号：US17003355

申请日：2020-08-26

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

IPC: G11B11/105 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording comprising an air bearing surface (ABS). The slider comprises a write pole at or near the ABS, and a near-field transducer (NFT) at or near the ABS and proximate the write pole. A main waveguide is configured to receive light from a laser source and communicate the light to the NFT. An optical power sensor comprises a tap waveguide optically coupled to the main waveguide and comprising a first end and an opposing second end. The optical power sensor also comprises a bolometer optically coupled to the tap waveguide and configured to receive a portion of the light extracted from the main waveguide by the tap waveguide.

公开(公告)号：US10770098B1

公开(公告)日：2020-09-08

申请号：US16591999

申请日：2019-10-03

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B5/31 ,  G11B5/60 ,  G11B5/48 ,  G11B7/1387 ,  G11B5/00

Abstract: A write head includes a first surface-plasmonic plate proximate a magnetic pole and recessed from a media-facing surface of the write head. A bottom surface of the first surface-plasmonic plate faces away from the magnetic pole and towards a waveguide core. The first surface-plasmonic plate is formed of a first material having lower-loss in plasmonic coupling than a second material, the second material being more mechanically robust than the first material. A second surface-plasmonic plate is formed of the second material and located on the bottom surface of the first surface-plasmonic plate. A lower edge of the second surface-plasmonic plate extends closer to the media-facing surface than the first surface-plasmonic plate. An upper edge of the second surface-plasmonic plate is slanted in a downtrack direction.

公开(公告)号：US10242702B1

公开(公告)日：2019-03-26

申请号：US15426291

申请日：2017-02-07

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B5/00 ,  G11B5/48 ,  G11B5/187 ,  G11B5/60 ,  G11B5/012

Abstract: A recording head has a near-field transducer overlapping a core near a media-facing surface of the recording head. The near-field transducer has an enlarged portion formed of a plasmonic material and a peg extending from the enlarged portion. The enlarged portion includes a stacked feature that reduces the emission of a polarization rotated portion of light to a recording medium.