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1. 发明授权

US08023225B2 Thermally assisted magnetic head with optical waveguide 有权
标题翻译：带光波导的热辅助磁头
公开(公告)号：US08023225B2
公开(公告)日：2011-09-20
申请号：US12176127
申请日：2008-07-18
申请人： Koji Shimazawa , Hiraku Hirabayashi , Kosuke Tanaka , Eiji Komura
发明人： Koji Shimazawa , Hiraku Hirabayashi , Kosuke Tanaka , Eiji Komura
IPC分类号： G11B7/135
CPC分类号： G11B5/314 , G11B2005/001 , G11B2005/0021
摘要： While an emitting position of light from an optical waveguide and a magnetic pole end part are made closer to each other, high-density writing onto a magnetic recording medium is realized.A thermally assisted magnetic head comprises a main magnetic pole layer having a magnetic pole end part exposed at a medium-opposing surface opposing a magnetic disk, and an optical waveguide for deflecting laser light incident thereon into a laminating direction. The main magnetic pole layer is positioned on a side where the light is deflected by the optical waveguide. The magnetic pole end part projects to the side where the light is deflected by the optical waveguide. The optical waveguide projects more than the magnetic pole end part on the medium-opposing surface side.
摘要翻译：虽然使来自光波导和磁极端部的光的发射位置彼此靠近，但是实现了对磁记录介质的高密度写入。热辅助磁头包括具有在与磁盘相对的介质相对表面处露出的磁极端部的主磁极层和用于将入射到其上的激光偏转成层叠方向的光波导。主磁极层位于光被光波导偏转的一侧。磁极端部突出到光被光波导偏转的一侧。光波导在介质相对表面侧上突出超过磁极端部。

2. 发明授权

US08295010B2 Thermally assisted magnetic head, head gimbal assembly, and hard disk drive 有权
标题翻译：热辅助磁头，磁头万向节组件和硬盘驱动器
公开(公告)号：US08295010B2
公开(公告)日：2012-10-23
申请号：US12053757
申请日：2008-03-24
申请人： Koji Shimazawa , Kosuke Tanaka , Hiraku Hirabayashi
发明人： Koji Shimazawa , Kosuke Tanaka , Hiraku Hirabayashi
IPC分类号： G11B5/127 , G11B5/40 , G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/02 , G11B2005/0005 , G11B2005/0021
摘要： The thermally assisted magnetic head comprises a medium-opposing surface; a magnetic recording device whose distance from a main magnetic pole to a medium is set longer than a distance from the medium-opposing surface to the medium; a first core for receiving light; and a second core positioned between a first light exit surface of the first core and the medium-opposing surface, having a second light exit surface on the medium side; while a distance between positions where an optical intensity distribution center within the first light exit surface and a center of the main magnetic pole are orthographically projected onto a reference plane including the second light exit surface is greater than a distance between an optical intensity distribution center within the second light exit surface and the position where the center of the leading end of the main magnetic pole is orthographically projected onto the reference plane.
摘要翻译：热辅助磁头包括介质相对表面; 从主磁极到介质的距离设定为比从介质相对表面到介质的距离长的磁记录装置; 第一个接收光的核心; 以及位于所述第一芯的第一光出射面与所述介质相对面之间的第二芯，在所述介质侧具有第二光出射面; 而第一光出射面内的光强度分布中心与主磁极的中心的正交投影到包括第二光出射面的基准面的位置之间的距离大于第二光出射面的光强度分布中心之间的距离，第二光出射表面和主磁极的前端的中心正交投影到参考平面上的位置。

3. 发明授权

US08547805B1 Thermally-assisted magnetic recording head having temperature sensor embedded on dielectric waveguide 有权
标题翻译：具有嵌入在介质波导上的温度传感器的热辅助磁记录头
公开(公告)号：US08547805B1
公开(公告)日：2013-10-01
申请号：US13432245
申请日：2012-03-28
申请人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka , Ryo Hosoi
发明人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/607 , G11B2005/0021
摘要： A thermal assisted magnetic recording head includes a dielectric waveguide that is configured to propagate propagation light a metal waveguide that is provided facing the dielectric waveguide and that couples to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, thereby generating and propagating surface plasmon, a near-field light generator that is exposed on an air bearing surface facing a magnetic recording medium either at an end part of the metal waveguide or at a position facing the end part of the metal waveguide, and that generates near-field light from the surface plasmon, a magnetic pole for magnetic recording that is exposed on the air bearing surface, and a temperature sensor that is arranged inside the dielectric waveguide.
摘要翻译：热辅助磁记录头包括电介质波导，其被配置为传播传播光，所述介质波导设置成面对介质波导并且以表面等离子体模式耦合到传播通过介质波导的传播光，从而产生和传播表面等离子体激元，近场光发生器，其在面向金属波导的端部的面向磁记录介质的空气轴承表面上或面对金属波导的端部的位置处暴露，并且产生近场光从表面等离子体激元，暴露在空气轴承表面上的用于磁记录的磁极，以及布置在电介质波导内部的温度传感器。

4. 发明授权

US08406091B2 Thermal assisted magnetic recording head having integral mounted of photo-detector and laser diode 有权
标题翻译：具有光电检测器和激光二极管整体安装的热辅助磁记录头
公开(公告)号：US08406091B2
公开(公告)日：2013-03-26
申请号：US12832593
申请日：2010-07-08
申请人： Koji Shimazawa , Kosuke Tanaka , Eiji Komura , Takashi Honda
发明人： Koji Shimazawa , Kosuke Tanaka , Eiji Komura , Takashi Honda
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head in which a slider including an optical system is joined with a light source unit. The light source unit comprises: a unit substrate including a joining surface joined with the slider and a source-installation surface adjacent to the joining surface; a light source provided in the source-installation surface and emits light for thermal assist; and a photodetector section formed inside the unit substrate, a light-receiving portion of the photodetector section for receiving light emitted from a rear light-emission center being located on the source-installation surface side. The light source unit includes the photodetector section that enables constant monitoring of light output from the light source. Accordingly, feedback adjustment of the light output can be accomplished. Further, since the rear light-emission center and the light-receiving portion can be located sufficiently close to each other, the light output can be monitored with a higher efficiency.
摘要翻译：提供了一种热辅助磁记录头，其中包括光学系统的滑块与光源单元接合。光源单元包括：单元基板，包括与滑块接合的接合表面和邻近接合表面的源安装表面; 设置在源安装表面中并发射用于热辅助的光的光源; 以及形成在所述单元基板内的光检测器部分，所述光电检测器部分的光接收部分用于接收从位于所述源安装表面侧的后发光中心发射的光。光源单元包括能够恒定地监视来自光源的光输出的光电检测器部分。因此，可以实现光输出的反馈调整。此外，由于后发光中心和受光部分可以彼此充分接近，所以能够以更高的效率监视光输出。

5. 发明授权

US08000178B2 Near-field light generating element utilizing surface plasmon 有权
标题翻译：利用表面等离子体激元的近场光产生元件
公开(公告)号：US08000178B2
公开(公告)日：2011-08-16
申请号：US12260639
申请日：2008-10-29
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.
摘要翻译：提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。传播表面等离子体激元的边缘是非常窄的传播区域。因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到可靠地到达端面。

6. 发明授权

US07876646B2 Thermally assisted magnetic head, head gimbal assembly, and hard disk drive 有权
标题翻译：热辅助磁头，磁头万向节组件和硬盘驱动器
公开(公告)号：US07876646B2
公开(公告)日：2011-01-25
申请号：US12003452
申请日：2007-12-26
申请人： Kosuke Tanaka , Koji Shimazawa , Eiji Komura
发明人： Kosuke Tanaka , Koji Shimazawa , Eiji Komura
IPC分类号： G11B11/00
CPC分类号： G11B5/02 , G11B5/314 , G11B2005/0002 , G11B2005/0021
摘要： A thermally assisted magnetic head comprises: a slider substrate, a first surface located opposite to a medium-facing surface, and side surfaces located between the medium-facing surface and the first surface; a magnetic head portion having a near-field light generator on the medium-facing surface side, and a magnetic recording element, the magnetic head portion being fixed to one of the side surfaces; and a laser diode element a relative position of which to the slider substrate is fixed so that emitted light thereof can reach the near-field light generator; a relation of λin
摘要翻译：一种热辅助磁头包括：滑块基板，与介质相对表面相对的第一表面和位于介质相对表面和第一表面之间的侧表面; 磁头部分，其在面向介质的表面侧上具有近场光产生器;以及磁记录元件，磁头部分固定在一个侧表面上; 并且激光二极管元件的相对位置固定到滑块基板上，使得其发射光可以到达近场光发生器; 满足λin<λmax的关系，其中λin是在发射光到达近场光发生器之前来自激光二极管元件的发射光的波长，λmax是产生效率的照射光的波长由近场光发生器产生的近场光最大。

7. 发明授权

US07855937B2 Near-field light generating element and heat-assisted magnetic recording head utilizing surface plasmon mode 有权
标题翻译：近场光产生元件和利用表面等离激元模式的热辅助磁记录头
公开(公告)号：US07855937B2
公开(公告)日：2010-12-21
申请号：US12205484
申请日：2008-09-05
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/4866 , G11B11/10536 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a near-field light generating element capable of avoiding excessive temperature rise, which comprises a waveguide and a near-field light generating layer. The layer comprises: a propagation surface on which surface plasmon excited by the light propagates; and a near-field light generating end at which near-field light is generated. The end is one end of the propagation surface. And a portion of the side surface of the waveguide is opposed to a portion of the propagation surface of the near-field light generating layer with a predetermined spacing so that the light propagating through the waveguide is coupled with the near-field light generating layer in a surface plasmon mode. The near-field light generating layer is preferably tapered toward the near-field light generating end.
摘要翻译：本发明提供能够避免温度过高的近场光发生元件，其包括波导管和近场光产生层。该层包括：由光激发的表面等离子体激发的传播表面; 以及产生近场光的近场光产生端。最后是传播表面的一端。并且波导的侧面的一部分与近场光产生层的传播表面的一部分以预定的间隔相对，使得通过波导传播的光与近场光产生层耦合表面等离子体激元模式。近场光产生层优选地朝向近场光产生端逐渐变细。

8. 发明申请

US20100079895A1 PLASMON ANTENNA AND HEAT-ASSISTED MAGNETIC RECORDING HEAD 有权
标题翻译： PLASMON天线和热辅助磁记录头
公开(公告)号：US20100079895A1
公开(公告)日：2010-04-01
申请号：US12239141
申请日：2008-09-26
申请人： Seiichi Takayama , Eiji Komura , Kosuke Tanaka , Daisuke Miyauchi , Koji Shimazawa
发明人： Seiichi Takayama , Eiji Komura , Kosuke Tanaka , Daisuke Miyauchi , Koji Shimazawa
IPC分类号： G11B5/02 , G21G4/00 , G11B5/48
CPC分类号： G11B5/314 , G11B5/3116 , G11B7/122 , G11B7/1387 , G11B11/10536 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a plasmon antenna in which a near-field light having a sufficient intensity is generated only in a desired location. The plasmon antenna comprises an end surface on a side where a near-field light is generated; the end surface is flat and has a shape with at least three vertexes or rounded corners; and an end surface of the plasmon antenna which is opposite to the flat end surface and receives light, is inclined with respect to the flat end surface so as to become closer to the flat end surface toward one of the at least three vertexes or rounded corners. When the light-receiving end surface of the plasmon antenna is irradiated with the light, a near-field light having a sufficient intensity can be generated at only the vertex or rounded corner toward which the entire plasmon antenna becomes thinner.
摘要翻译：提供了一种等离子体激元天线，其中仅在期望的位置产生具有足够强度的近场光。等离子体激元天线包括在产生近场光的一侧上的端面; 端面平坦，具有至少三个顶点或圆角的形状; 以及等离子体激元天线的与平坦端面相对并且接收光的端面相对于平坦端面倾斜，以朝着至少三个顶点或圆角中的一个变得更靠近平坦端面。当等离子体激元的光接收端面用光照射时，只能在整个等离子体天线变薄的顶点或圆角处产生具有足够强度的近场光。

9. 发明授权

US08363515B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08363515B1
公开(公告)日：2013-01-29
申请号：US13397041
申请日：2012-02-15
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide propagating light in a first direction, the first direction intersecting with an air bearing surface; a plasmon generator having a base and a projection, the base having a surface, and the projection having a top, standing partially on the surface of the base and extending in the first direction. The plasmon generator has a first portion and a second portion, and the first portion and the second portion are provided in this order from the air bearing surface in a direction away from the air bearing surface. Herein, the top of the projection and the surface of the base in the first portion define a first step, and the top of the projection and the surface of the base in the second portion define a second step. The first step is larger than the second step.
摘要翻译：热辅助磁记录头包括：磁极; 波导在第一方向传播光，所述第一方向与空气轴承表面相交; 具有基部和突起的等离子体发生器，所述基部具有表面，并且所述突起具有顶部，部分地位于所述基部的所述表面上并沿所述第一方向延伸。等离子体发生器具有第一部分和第二部分，并且第一部分和第二部分沿着远离空气支承表面的方向从空气轴承表面依次设置。这里，突起的顶部和第一部分中的基部的表面限定第一步骤，并且突起的顶部和第二部分中的基部的表面限定第二步骤。第一步大于第二步。

10. 发明授权

US08270261B2 Thermally-assisted magnetic recording head comprising waveguide with inverted-trapezoidal shape 有权
标题翻译：热辅助磁记录头包括具有倒梯形形状的波导
公开(公告)号：US08270261B2
公开(公告)日：2012-09-18
申请号：US12683041
申请日：2010-01-06
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Kosuke Tanaka
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head comprising a near-field-light-generating (NFL-generating) optical system with an improved light use efficiency. The head comprises a magnetic pole, a waveguide propagating a light for exciting surface plasmon, and a NF-optical device configured to emit NF-light from its end surface located adjacent to the magnetic pole end surface. The waveguide cross-section, taken by a plane perpendicular to a waveguide edge along elongated direction, has substantially a trapezoidal shape in which a longer side of opposed parallel sides is an edge of the cross-section on the NF-optical device side. This configuration enables a coupled portion of the NF-optical device which is coupled with the light to be placed in the effective distribution range of the light seeping from the waveguide. Consequently, there can be realized a sufficiently strong coupling between the light seeping from the waveguide and the NF-optical device.
摘要翻译：提供了一种热辅助磁记录头，其包括具有改善的光利用效率的近场光产生（NFL生成）光学系统。头包括磁极，传播用于激发表面等离子体激元的光的波导和被配置为从其邻近磁极端表面的端表面发射NF光的NF光学装置。波导横截面由沿着细长方向垂直于波导边缘的平面截取，具有基本上梯形的形状，其中相对的平行边的较长边是NF光学器件侧的横截面的边缘。该配置使得能够将与光耦合的NF光学器件的耦合部分放置在从波导管渗出的光的有效分布范围内。因此，可以实现从波导管和NF光学器件渗出的光之间的足够强的耦合。

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