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    PLASMONIC TRANSDUCER WITH REDUCED CROSS SECTION AT MEDIA-READING SURFACE
    61.
    发明申请
    PLASMONIC TRANSDUCER WITH REDUCED CROSS SECTION AT MEDIA-READING SURFACE 有权
    在介质读取表面上具有减少的交叉部分的等离子体传感器

    公开(公告)号：US20130071062A1

    公开(公告)日：2013-03-21

    申请号：US13675776

    申请日：2012-11-13

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng ,  Kaizhong Gao ,  Yongjun Zhao

    IPC: G02B6/26

    CPC classification number: G11B5/314 ,  G02B6/1226 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: A plasmonic transducer includes at least two metal elements with a gap therebetween. The metal elements are placed along a plasmon-enhanced, near-field radiation delivery axis. Cross sections of the metal elements in a plane normal to the delivery axis vary in shape along the delivery axis. The metal elements have a reduced cross section portion at a media-facing surface oriented normal to the delivery axis. A dielectric material surrounds the reduced cross section portion of the plasmonic transducer at the media-facing surface, and reduces deformation of the metal elements proximate the media-facing surface at elevated temperatures.

    Abstract translation: 等离子体激元换能器包括至少两个在它们之间具有间隙的金属元件。 金属元素沿着等离子体增强的近场辐射输送轴放置。 垂直于输送轴的平面中的金属元件的横截面沿着输送轴线的形状不同。 金属元件在垂直于输送轴线的面向介质的表面上具有减小的横截面部分。 电介质材料围绕等离子体激元换能器在面向介质的表面处的减少的横截面部分，并且在升高的温度下减小靠近面向介质的表面的金属元件的变形。

    Heat-assisted magnetic recording head with a near-field oscillator pair
    62.
    发明授权
    Heat-assisted magnetic recording head with a near-field oscillator pair 有权

    公开(公告)号：US11545180B1

    公开(公告)日：2023-01-03

    申请号：US17356419

    申请日：2021-06-23

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng

    IPC: G11B13/08 ,  G11B5/00

    Abstract: A heat-assisted magnetic recording head includes a near-field transducer (NFT). The NFT includes a plasmonic disk and a near-field oscillator pair. The near-field oscillator pair includes a receiving oscillator and an emitting oscillator. The receiving oscillator is operatively coupled to the plasmonic disk and configured to receive localized surface plasmons from the plasmonic disk and amplify a near field of the localized surface plasmons. The emitting oscillator is configured to receive the near field from the receiving oscillator and emit the near field toward a surface of a magnetic disk.

    Heat-assisted recording head using blue to ultraviolet wavelength laser
    63.
    发明授权
    Heat-assisted recording head using blue to ultraviolet wavelength laser 有权

    公开(公告)号：US11386924B1

    公开(公告)日：2022-07-12

    申请号：US17148717

    申请日：2021-01-14

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng

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

    Abstract: A recording head has a light source that emits light at a wavelength in a wavelength range of 260 nm to 460 nm inclusive. A slider body of the light source includes a magnetic pole extending to a media-facing surface of the recording head and integrated photonics that deliver the light to a recording medium. The integrated photonics include a waveguide that couples the light from the light source to the media-facing surface of the slider and a near-field transducer coupled to receive the light from the waveguide. The near-field transducer has a surface plasmon plate and a peg extending from the surface plasmon plate. The surface plasmon plate is formed of a first material having a first plasmonic quality factor (Q-factor) above 5 in the wavelength range, the peg formed of a second material having a second Q-factor above 1.2 in the wavelength range.

    Heat-assisted magnetic recording head having near-field transducer with sunken plasmonic plate
    64.
    发明授权
    Heat-assisted magnetic recording head having near-field transducer with sunken plasmonic plate 有权

    公开(公告)号：US11380354B2

    公开(公告)日：2022-07-05

    申请号：US17238079

    申请日：2021-04-22

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng

    IPC: G11B5/48 ,  G11B5/31 ,  G11B5/00

    Abstract: A recording head includes a nanorod configured to heat a hotspot on a recording media, a plasmonic plate configured to concentrate an electric field to excite the nanorod, and a heat sink configured to dissipate heat from the nanorod. The recording head includes a first diffusion barrier plate configured to resist diffusion of materials between the plasmonic plate and the nanorod and a second diffusion barrier plate configured to resist diffusion of materials between the heat sink and the nanorod. The first diffusion barrier plate is disposed between the nanorod and the plasmonic plate and is coupled to a bottom surface of the nanorod. The second diffusion barrier plate is disposed between the heat sink and the nanorod and is coupled to the top surface of the nanorod.

    Heat-assisted recording head with one or more surface-plasmonic plates operable as a near-field transducer
    65.
    发明授权
    Heat-assisted recording head with one or more surface-plasmonic plates operable as a near-field transducer 有权

    公开(公告)号：US11056135B1

    公开(公告)日：2021-07-06

    申请号：US16861459

    申请日：2020-04-29

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng

    IPC: G11B5/31 ,  G11B5/60 ,  G11B5/706 ,  G11B13/08 ,  G11B5/00

    Abstract: A recording head includes a dielectric waveguide that extends towards a media-facing surface of the recording head. A hybrid waveguide is near the media-facing surface and includes the dielectric waveguide and a heat spreader plate having a crosstrack dimension that is at least twice that of a core of the dielectric waveguide. The hybrid waveguide is operable to combine a total internal reflection of the dielectric waveguide with a surface plasmon confinement of the heat spreading plate to excite TM-even mode in the hybrid waveguide. A surface-plasmonic plate is in contact with the heat spreader plate, the second surface-plasmonic plate has a peg extending from an enlarged portion. Light energy from the TM-even mode propagating from the hybrid waveguide to the surface-plasmonic plate causes the surface plasmonic plate to focus the light energy to heat a recording medium.

    ANGLED NEAR-FIELD TRANSDUCER AND WAVEGUIDE
    70.
    发明申请
    ANGLED NEAR-FIELD TRANSDUCER AND WAVEGUIDE 有权

    公开(公告)号：US20170125048A1

    公开(公告)日：2017-05-04

    申请号：US14928611

    申请日：2015-10-30

    Applicant: Seagate Technology LLC

    Inventor： Chubing Peng

    IPC: G11B5/48

    CPC classification number: G11B5/4866 ,  G11B5/105 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: An apparatus comprises a waveguide having an input end that receives energy in a transverse electric (TE00) mode from an energy source along a substrate-parallel plane. The apparatus also includes a near-field transducer located proximate an output end of the waveguide that receives the energy in the TE00 mode. The output end of the waveguide is at an oblique angle to a cross-track line at an intersection of a media-facing surface and the substrate-parallel plane. The near-field transducer includes an enlarged portion at the oblique angle to the cross-track line.

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