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    Heat-assisted magnetic recording head including plasmon generator
    1.
    发明授权
    Heat-assisted magnetic recording head including plasmon generator 有权
    热辅助磁记录头包括等离子体发生器

    公开(公告)号：US08125857B2

    公开(公告)日：2012-02-28

    申请号：US12728600

    申请日：2010-03-22

    申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A plasmon generator has an outer surface including a propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween and extends in a direction perpendicular to the medium facing surface. The propagation edge is arc-shaped in a cross section parallel to the medium facing surface. The plasmon generator includes a shape changing portion in which a radius of curvature of the propagation edge in the cross section parallel to the medium facing surface continuously decreases with decreasing distance to the medium facing surface.

    摘要翻译： 等离子体发生器具有包括传播边缘的外表面，并且具有位于传播边缘的末端并位于面向介质的表面中的近场光产生部分。 传播边缘面向波导芯的ev逝光产生表面，其间具有预定距离，并且在垂直于介质面向表面的方向上延伸。 传播边缘在平行于面向介质的表面的横截面中是弧形的。 等离子体发生器包括形状改变部分，其中平面于介质面向表面的横截面中的传播边缘的曲率半径随着到面向介质的表面的距离的减小而连续地减小。

    HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR
    4.
    发明申请
    HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR 有权
    热辅助磁记录头，包括等离子发生器

    公开(公告)号：US20110228419A1

    公开(公告)日：2011-09-22

    申请号：US12728600

    申请日：2010-03-22

    申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    IPC分类号： G11B5/02

    CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A plasmon generator has an outer surface including a propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween and extends in a direction perpendicular to the medium facing surface. The propagation edge is arc-shaped in a cross section parallel to the medium facing surface. The plasmon generator includes a shape changing portion in which a radius of curvature of the propagation edge in the cross section parallel to the medium facing surface continuously decreases with decreasing distance to the medium facing surface.

    摘要翻译： 等离子体发生器具有包括传播边缘的外表面，并且具有位于传播边缘的末端并位于面向介质的表面中的近场光产生部分。 传播边缘面向波导芯的ev逝光产生表面，其间具有预定距离，并且在垂直于介质面向表面的方向上延伸。 传播边缘在平行于面向介质的表面的横截面中是弧形的。 等离子体发生器包括形状改变部分，其中平面于介质面向表面的横截面中的传播边缘的曲率半径随着到面向介质的表面的距离的减小而连续地减小。

    Thermally-Assisted Magnetic Recording Head Having Near-Field Optical Device with Propagation Edge
    5.
    发明申请
    Thermally-Assisted Magnetic Recording Head Having Near-Field Optical Device with Propagation Edge 有权
    具有传播边缘的近场光学器件的热辅助磁记录头

    公开(公告)号：US20110176398A1

    公开(公告)日：2011-07-21

    申请号：US12688367

    申请日：2010-01-15

    申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

    发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

    IPC分类号： G11B11/00

    CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

    摘要： A thermally-assisted magnetic recording head includes a waveguide through which a light for exciting surface plasmon propagates, a near-field optical device configured to be coupled with the light in a surface plasmon mode and to emit near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole for generating write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface having a contact to the waveguide, and a propagation edge provided on a side opposite to the contact-to-waveguide surface, extending to the near-field-light-generating end surface, and configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the on the opposed-to-medium surface side.

    摘要翻译： 热辅助磁记录头包括用于激发表面等离子体激元的光传播的波导，被配置成以表面等离子体激元模式与光耦合的近场光学装置，并且从近场发射近场光 形成相对中间表面的一部分的光产生端面，以及用于从其相对中间表面侧的端部产生写入场的磁极。 近场光学器件包括与波导接触的接触到波导表面，以及设置在与波导表面相对的一侧的传播边缘，延伸到近场光产生端 并且被配置为在由光激发的表面等离子体上传播。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近对面 - 中等表面侧。

    Thermally-Assisted Magnetic Recording Head Comprising Near-Field Light Generator
    7.
    发明申请
    Thermally-Assisted Magnetic Recording Head Comprising Near-Field Light Generator 有权
    包括近场光发生器的热辅助磁记录头

    公开(公告)号：US20110058272A1

    公开(公告)日：2011-03-10

    申请号：US12557078

    申请日：2009-09-10

    申请人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

    发明人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

    IPC分类号： G11B5/02

    CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

    摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.

    摘要翻译： 提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。 磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触， 发生器不包括传播边。 因此，磁极端面与产生NFL的端面之间的距离为零。 传播边缘不与磁极接触。 因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。 因此，确保NFL发射点处于传播边缘的终点。

    Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device
    8.
    发明授权
    Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device 有权
    热辅助磁记录头，磁头万向架组件和磁记录装置

    公开(公告)号：US08400885B2

    公开(公告)日：2013-03-19

    申请号：US13097133

    申请日：2011-04-29

    申请人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

    发明人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

    IPC分类号： G11B13/08

    CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A thermally-assisted magnetic recording head includes: a pole that generates a writing magnetic field from an end surface that forms a part of an air bearing surface that opposes a magnetic recording medium; a waveguide that propagates light to excite surface plasmon; and a plasmon generator that is provided between the pole and the waveguide and that generates near-field light from a near-field light generating end surface that forms a part of the air bearing surface by coupling with the light in a surface plasmon mode. The plasmon generator includes a flat plate part and a projection part that projects from the flat plate part to the waveguide side and is provided closer to a trailing side than the pole is.

    摘要翻译： 一种热辅助磁记录头，包括：从端面产生书写磁场的极，所述磁场形成与磁记录介质相对的空气轴承表面的一部分; 将光传播到激发表面等离子体激元的波导; 以及等离子体发生器，其设置在所述极与所述波导之间，并且通过以表面等离子体模式与所述光结合而从形成所述空气轴承表面的一部分的近场光产生端面产生近场光。 等离子体发生器包括平板部分和突出部分，其从平板部分突出到波导侧并且设置成比杆靠后的后侧。

    Thermally-assisted magnetic recording head comprising near-field light generator
    9.
    发明授权
    Thermally-assisted magnetic recording head comprising near-field light generator 有权
    包括近场光发生器的热辅助磁记录头

    公开(公告)号：US08325567B2

    公开(公告)日：2012-12-04

    申请号：US12557078

    申请日：2009-09-10

    申请人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

    发明人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

    摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.

    摘要翻译： 提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。 磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触， 发生器不包括传播边。 因此，磁极端面与产生NFL的端面之间的距离为零。 传播边缘不与磁极接触。 因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。 因此，确保NFL发射点处于传播边缘的终点。

    THERMALLY-ASSISTED MAGNETIC RECORDING HEAD, HEAD GIMBAL ASSEMBLY AND MAGNETIC RECORDING DEVICE
    10.
    发明申请
    THERMALLY-ASSISTED MAGNETIC RECORDING HEAD, HEAD GIMBAL ASSEMBLY AND MAGNETIC RECORDING DEVICE 有权
    热辅助磁记录头，磁头组件和磁记录装置

    公开(公告)号：US20120275280A1

    公开(公告)日：2012-11-01

    申请号：US13097133

    申请日：2011-04-29

    申请人： Daisuke MIYAUCHI ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

    发明人： Daisuke MIYAUCHI ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

    IPC分类号： G11B13/08

    CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A thermally-assisted magnetic recording head includes: a pole that generates a writing magnetic field from an end surface that forms a part of an air bearing surface that opposes a magnetic recording medium; a waveguide that propagates light to excite surface plasmon; and a plasmon generator that is provided between the pole and the waveguide and that generates near-field light from a near-field light generating end surface that forms a part of the air bearing surface by coupling with the light in a surface plasmon mode. The plasmon generator includes a flat plate part and a projection part that projects from the flat plate part to the waveguide side and is provided closer to a trailing side than the pole is.

    摘要翻译： 一种热辅助磁记录头，包括：从端面产生书写磁场的极，所述磁场形成与磁记录介质相对的空气轴承表面的一部分; 将光传播到激发表面等离子体激元的波导; 以及等离子体发生器，其设置在所述极和所述波导之间，并且通过以表面等离子体模式与所述光结合而从形成所述空气轴承表面的一部分的近场光产生端面产生近场光。 等离子体发生器包括平板部分和突出部分，其从平板部分突出到波导侧，并且设置成比杆极靠近尾部。