公开(公告)号：US20140036646A1

公开(公告)日：2014-02-06

申请号：US13789197

申请日：2013-03-07

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Chubing Peng ,  Edward Charles Gage ,  Yongjun Zhao

IPC: G11B13/08

CPC classification number: G11B13/08 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus includes a waveguide core having an elongated edge parallel to a substrate plane of the apparatus. An output end of the waveguide core faces a media-facing surface of the apparatus. A plate-like portion of a plasmonic material has a major surface facing the elongated edge of the waveguide core, and the major surface has a narrowed output end facing the media-facing surface. An elongated ridge of the plasmonic material is disposed on at least part of the plate-like portion between an input end and the narrowed output end.

公开(公告)号：US08605556B1

公开(公告)日：2013-12-10

申请号：US13675812

申请日：2012-11-13

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Yongjun Zhao

IPC: G11B11/00

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

Abstract: An apparatus includes a near-field transducer that having 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 output end at a media-facing surface, and an input end opposite the output end. A channel waveguide is configured to deliver light to the input end of the near-field transducer. The channel waveguide has a core and cladding, and a portion of the core extends into the gap of the near-field transducer.

Abstract translation: 一种装置包括近场换能器，其具有在基板平行平面上配置为并排的两个金属元件，其间具有间隙。 间隙沿着基板平行平面布置，并且在面向介质的表面上具有输出端，以及在输出端相对的输入端。 通道波导被配置为将光传送到近场换能器的输入端。 通道波导具有芯和包层，并且芯的一部分延伸到近场换能器的间隙中。

公开(公告)号：US20130294208A1

公开(公告)日：2013-11-07

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: G11B13/08

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：US20130279035A1

公开(公告)日：2013-10-24

申请号：US13797797

申请日：2013-03-12

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Chubing Peng ,  Kaizhong Gao ,  Frank Edgar Stageberg

IPC: G02B5/10

CPC classification number: G02B5/10 ,  G02B19/0023 ,  G02B19/0052 ,  G11B5/102 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A planar collimator has first and second sections each intersecting at a junction between a first axis and a second axis normal to the first axis. Each of the first and second sections have geometries configured to receive light from a source point located on the first axis and collimate the light at respective positive and negative tilting angles relative to the second axis. The first and second sections direct the collimated light to respective first and second sides of a focusing mirror and away from a gap between the first and second sides of the focusing mirror.

Abstract translation: 平面准直器具有第一和第二部分，每个部分在与第一轴线垂直的第一轴线和第二轴线之间的接合处相交。 第一和第二部分中的每一个具有被配置为接收来自位于第一轴线上的源点的光的几何形状，并以相对于第二轴线的相应的正和负倾斜角准直光。 第一和第二部分将准直光引导到聚焦反射镜的相应的第一和第二侧并远离聚焦镜的第一和第二侧之间的间隙。

公开(公告)号：US11823719B1

公开(公告)日：2023-11-21

申请号：US17875859

申请日：2022-07-28

Applicant: Seagate Technology LLC.

Inventor： Chubing Peng

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

CPC classification number: G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. A waveguide overlaps and delivers light to the near-field transducer, the light having a near-infrared wavelength. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from a peg of the near-field transducer by a gap. The subwavelength focusing mirrors each include a core having a first edge exposed at the media-facing surface. The core formed of a core material that is resistant to mechanical wear and corrosion, such as a dielectric or robust metal. A liner covers a second edge of the core facing the near-field transducer. The liner includes a plasmonic metal that is has a plasmonic frequency in the ultraviolet range.

公开(公告)号：US11574648B2

公开(公告)日：2023-02-07

申请号：US17400570

申请日：2021-08-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

IPC: G11B5/31 ,  G11B5/48 ,  G11B5/60 ,  G11B5/187 ,  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：US20220068301A1

公开(公告)日：2022-03-03

申请号：US17400570

申请日：2021-08-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

IPC: G11B5/48 ,  G11B5/60

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：US10811038B1

公开(公告)日：2020-10-20

申请号：US16597935

申请日：2019-10-10

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Michael Allen Seigler

IPC: G11B5/31 ,  G11B5/33 ,  G11B5/115 ,  G11B5/40 ,  G11B5/187 ,  G11B5/127 ,  G11B5/00

Abstract: A heat-assisted magnetic recording head includes a write pole tip that extends to a media-facing surface and a heat sink that is thermally coupled to a side of the write pole tip. A surface plasmonic plate is in contact with a side of the heat sink that faces away from the write pole and is recessed from, the media-facing surface. A nanorod extends from a surface of the surface plasmonic plate and towards the media-facing surface.

公开(公告)号：US10283152B1

公开(公告)日：2019-05-07

申请号：US16006324

申请日：2018-06-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  James Gary Wessel ,  Lien Lee

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00 ,  G11B13/08 ,  G11B5/60 ,  G11B7/12 ,  G11B11/24

Abstract: A recording head includes a waveguide configured to deliver light from a light source to a media-facing surface of the recording head. A near-field transducer is at the media-facing surface the proximate the waveguide. The near-field transducer includes a plasmonic structure with at least two opposing internal surfaces. A dielectric material fills a region between the at least two opposing internal surfaces. A dielectric slit extends between the at least two opposing internal surfaces. The dielectric slit is substantially parallel to the media-facing surface and includes a transparent material with a refractive index different than that of the dielectric material.

公开(公告)号：US10121496B1

公开(公告)日：2018-11-06

申请号：US15901991

申请日：2018-02-22

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Tae-Woo Lee ,  Peng Zhang ,  Weibin Chen

IPC: G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00 ,  G11B11/105 ,  G11B7/1387

Abstract: A write head includes a waveguide, a magnetic pole, and a near-field transducer. The near-field transducer includes an enlarged portion and a peg. The peg is separated from the magnetic pole in a downtrack direction by a dielectric gap. A peg coupler covers a bottom surface of the magnetic pole and is separated from the peg. The peg coupler is formed of a first plasmonic material. A pad extends from the peg coupler into part of the gap in the downtrack direction towards the peg. The pad is formed of a second plasmonic material and extends into the write head away from the media-facing surface a distance L that is less than a corresponding distance of the peg coupler.