公开(公告)号：US08208349B2

公开(公告)日：2012-06-26

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, a near-field optical device which emits 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 generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge 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 opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场 极点从其相对到中等表面侧的端部产生写入场。 近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。 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 靠近相对中的表面侧。

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。

公开(公告)号：US08077558B1

公开(公告)日：2011-12-13

申请号：US12785897

申请日：2010-05-24

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

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

IPC分类号： G11B11/00

CPC分类号： G11B5/3163 ,  B82Y20/00 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/1384 ,  G11B7/1387 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A plasmon generator has an outer surface including a plasmon exciting part that faces an evanescent light generating surface of a waveguide. The outer surface further includes first and second inclined surfaces that increase in distance from each other with increasing distance from the plasmon exciting part, and a front end face. The front end face has first and second portions that are connected to each other into a V-shape. The first portion includes a first side lying at an end of the first inclined surface. The second portion includes a second side lying at an end of the second inclined surface. An angle formed between a lower part of the first side and a lower part of the second side is smaller than that formed between an upper part of the first side and an upper part of the second side.

摘要翻译： 等离子体发生器具有外表面，其包括面向波导的ev逝光产生表面的等离子体激元部分。 外表面还包括第一和第二倾斜表面，该第一和第二倾斜表面随距距等离子体激元部分的距离增加而彼此间隔开，并且前端面。 前端面具有彼此连接成V形的第一和第二部分。 第一部分包括位于第一倾斜表面的端部的第一侧。 第二部分包括位于第二倾斜表面的端部的第二侧。 形成在第一侧的下部和第二侧的下部之间的角度小于在第一侧的上部和第二侧的上部之间形成的角度。

公开(公告)号：US08325570B1

公开(公告)日：2012-12-04

申请号：US13363795

申请日：2012-02-01

申请人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

发明人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

IPC分类号： G11B11/00

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

摘要： A thermally-assisted magnetic recording head includes: a medium facing surface; a magnetic pole; a waveguide including a core and a cladding; a plasmon generator; and a protruding member. The protruding member is disposed between the medium facing surface and a front end face of the core facing toward the medium facing surface. The protruding member has a first end face located in the medium facing surface, and a second end face facing toward the front end face of the core and receiving light having propagated through the core and passed through the front end face. The protruding member is formed of a metal different from both a material forming the magnetic pole and a material forming the plasmon generator. The protruding member is heated and expanded by the light received at the second end face, so that the first end face gets protruded toward a magnetic recording medium.

摘要翻译： 一种热辅助磁记录头包括：面向介质的表面; 磁极 包括芯和包层的波导; 等离子体发生器; 和突出部件。 突出构件设置在面向介质的表面和芯的前端面之间，面向面向介质的表面。 突出构件具有位于介质相对表面中的第一端面和面向芯的前端面的第二端面，并且接收已经穿过芯并且穿过前端面的光。 突出部件由不同于形成磁极的材料和形成等离子体激元发生器的材料形成。 突出部件被第二端面所接收的光线加热膨胀，使得第一端面朝向磁记录介质突出。

公开(公告)号：US20120147716A1

公开(公告)日：2012-06-14

申请号：US12962878

申请日：2010-12-08

申请人： Shinji HARA ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

发明人： Shinji HARA ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

IPC分类号： G11B13/04 ,  G11B13/08 ,  B82Y10/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  B82Y25/00 ,  G11B2005/0021

摘要： A thermally-assisted magnetic head that has an air bearing surface (ABS) facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element that includes a pole of which an edge part is positioned on the ABS and which generates magnetic flux traveling to the recording medium; a waveguide that is configured with a core through which light propagates and a cladding, surrounding a periphery of the core, at least one part of which extends to the ABS; a plasmon generator that faces a part of the core and that extends toward the ABS side; and a bank layer that is positioned between the plasmon generator and the pole, and of which an edge part on the ABS side protrudes relative to the plasmon generator.

摘要翻译： 具有面向记录介质的空气轴承表面（ABS）并且在加热记录介质的同时执行磁记录的热辅助磁头包括：磁记录元件，其包括边缘部分位于ABS上的极点和 其产生传播到记录介质的磁通量; 波导，其配置有光传播的芯和包围芯，围绕芯的周边，其至少一部分延伸到ABS; 等离子体发生器，其面向所述芯的一部分并朝向ABS侧延伸; 以及位于等离子体发生器和极之间的堤层，并且ABS侧上的边缘部分相对于等离子体发生器突出。

公开(公告)号：US08432773B2

公开(公告)日：2013-04-30

申请号：US12962878

申请日：2010-12-08

申请人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

发明人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  B82Y25/00 ,  G11B2005/0021

摘要： A thermally-assisted magnetic head that has an air bearing surface (ABS) facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element that includes a pole of which an edge part is positioned on the ABS and which generates magnetic flux traveling to the recording medium; a waveguide that is configured with a core through which light propagates and a cladding, surrounding a periphery of the core, at least one part of which extends to the ABS; a plasmon generator that faces a part of the core and that extends toward the ABS side; and a bank layer that is positioned between the plasmon generator and the pole, and of which an edge part on the ABS side protrudes relative to the plasmon generator.

摘要翻译： 具有面向记录介质的空气轴承表面（ABS）并且在加热记录介质的同时执行磁记录的热辅助磁头包括：磁记录元件，其包括边缘部分位于ABS上的极点和 其产生传播到记录介质的磁通量; 波导，其配置有光传播的芯和包围芯，围绕芯的周边，其至少一部分延伸到ABS; 等离子体发生器，其面向所述芯的一部分并朝向ABS侧延伸; 以及位于等离子体发生器和极之间的堤层，并且ABS侧上的边缘部分相对于等离子体发生器突出。

公开(公告)号：US08374063B2

公开(公告)日：2013-02-12

申请号：US13029555

申请日：2011-02-17

申请人： Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura ,  Takahiko Izawa

发明人： Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura ,  Takahiko Izawa

IPC分类号： G11B11/00

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

摘要： A heat-assisted magnetic write head includes: a magnetic pole having an end surface exposed to an air bearing surface; a waveguide extending toward the air bearing surface to propagate light; a plasmon generator provided between the magnetic pole and the waveguide and generating near-field light from the air bearing surface, based on the light propagated through the waveguide; and a clad provided to surround both the waveguide and the plasmon generator collectively, the clad having a refractive index lower than that of the waveguide, and exhibiting a thermal conductivity higher than that of the waveguide. The clad may be provided to collectively surround the magnetic pole, as well.

摘要翻译： 一种热辅助磁写头包括：具有暴露于空气轴承表面的端面的磁极; 波导向空气轴承表面延伸以传播光; 基于通过波导传播的光，设置在磁极和波导之间并产生来自空气轴承表面的近场光的等离子体激元发生器; 以及包围所述波导和所述等离子体发生器两者的集合体，所述包层的折射率低于所述波导的折射率，并且具有高于所述波导的导热率。 也可以提供包层以集中地围绕磁极。

公开(公告)号：US08374059B2

公开(公告)日：2013-02-12

申请号：US13045992

申请日：2011-03-11

申请人： Takahiko Izawa ,  Tsutomu Chuo ,  Eiji Komura ,  Kosuke Tanaka

发明人： Takahiko Izawa ,  Tsutomu Chuo ,  Eiji Komura ,  Kosuke Tanaka

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G02B6/10 ,  G11B5/3106 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A heat-assisted magnetic write head includes a magnetic pole having an end surface exposed at an air bearing surface, a waveguide extending toward the air bearing surface to propagate light, a first pair of clads made of a first dielectric material having a refractive index lower than that of the waveguide, and sandwiching the waveguide in a track width direction, and a second pair of clads made of a second dielectric material having a refractive index lower than that of the first dielectric material, and sandwiching the waveguide in a thickness direction orthogonal to the track width direction. Further, the heat-assisted magnetic write head may include, between the magnetic pole and the waveguide, a plasmon generator generating near-field light from the air bearing surface, based on light propagating through the waveguide.

摘要翻译： 一种热辅助磁性写头包括：具有在空气轴承表面露出的端面的磁极;向空气轴承表面延伸以传播光的波导;由折射率较低的第一介电材料制成的第一对包层 和波导夹着波导宽度方向的第二对夹层，以及折射率低于第一介电体的折射率的第二介电材料构成的第二对夹层，并将波导夹在厚度方向正交 到轨道宽度方向。 此外，热辅助磁写头可以包括在磁极和波导之间的等离子体发生器，其基于通过波导传播的光产生从空气轴承表面产生近场光。