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1. 发明授权

US08427927B1 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：US08427927B1
公开(公告)日：2013-04-23
申请号：US13370982
申请日：2012-02-10
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide allowing a transverse-electric (TE) wave oscillating in a cross-track direction to propagate toward an air bearing surface; and a plasmon generator having a tip portion near the air bearing surface, the tip portion being provided to overlap, in a down-track direction, with both the magnetic pole and the waveguide, and having a quadrangular cross-section substantially parallel to the air bearing surface.
摘要翻译：热辅助磁记录头包括：磁极; 允许在横向轨道方向上振荡的横向电（TE）波向空气轴承表面传播的波导; 以及等离子体发生器，其具有靠近所述空气支承表面的尖端部分，所述尖端部分被设置为沿着磁道和所述波导两者的向下轨道方向重叠，并且具有基本上平行于所述空气的四边形横截面承载面。

2. 发明授权

US08374061B2 Thermally-assisted magnetic recording head capable of reducing the number of binding wires 有权
标题翻译：热辅助磁记录头，能够减少装订线的数量
公开(公告)号：US08374061B2
公开(公告)日：2013-02-12
申请号：US12190381
申请日：2008-08-12
申请人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
发明人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A slider has a slider substrate, an electromagnetic transducer, a waveguide for receiving light from a surface on the side opposite from a medium-opposing surface and guiding the light to the medium-opposing surface side, and a device electrode electrically connected to the electromagnetic transducer. A light source unit includes a light source supporting substrate, a light source, and a lead extending from the slider side to the side opposite from the slider and having both end parts exposed at a surface of the light source unit. The device electrode of the slider is exposed at the surface of the slider on the side opposite from the medium-opposing surface without being covered with the light source unit. An end part on the slider side of the lead of the light source unit is soldered to the device electrode of the slider.
摘要翻译：滑块具有滑块基板，电磁换能器，用于从与介质相对表面相对的一侧上的表面接收光并将光引导到介质相对表面侧的波导，以及电连接到电磁传感器。光源单元包括光源支撑基板，光源和从滑块侧延伸到与滑块相对的一侧的引线，并且两端部露出在光源单元的表面。滑块的器件电极在与中间相对表面相对的一侧的滑块的表面处被暴露，而不被光源单元覆盖。将光源单元的引线的滑块侧的端部焊接到滑块的器件电极。

3. 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。

4. 发明授权

US08325568B2 Thermally-assisted magnetic recording head comprising characteristic clads 有权
标题翻译：包括特征包层的热辅助磁记录头
公开(公告)号：US08325568B2
公开(公告)日：2012-12-04
申请号：US12848422
申请日：2010-08-02
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
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 with improved light density of near-field light (NF-light) with which a medium is irradiated. The head comprises: a magnetic pole; a waveguide for propagating light for exciting surface plasmon; a surface plasmon generator provided between the magnetic pole and the waveguide, coupled with the light in a surface plasmon mode, and emitting NF-light; and a clad portion provided at least between the waveguide and the surface plasmon generator and comprising a transition region in which a refractive index decreases along a direction from the waveguide toward the magnetic pole. The provision of the clad portion including the transition region enables improvement of the light density of NF-light due to the convergence of surface plasmon excited in the surface plasmon generator to predetermined locations, while avoiding the problem of temperature rise due to reduction of the volume of surface plasmon generator.
摘要翻译：提供了一种具有改善的照射介质的近场光（NF光）的光密度的热辅助磁记录头。磁头包括：磁极; 用于传播激发表面等离子体激元的光的波导; 设置在磁极和波导之间的表面等离子体发生器，与表面等离子体模式的光耦合，并发射NF光; 以及至少在波导管和表面等离子体激元发生器之间设置的包层部分，并且包括其中折射率沿着从波导到磁极的方向减小的过渡区域。提供包括过渡区域的包层部分能够改善由于表面等离子体发生器中激发的表面等离子激元的会聚而导致的NF光的光密度到预定位置，同时避免了由于体积的减小导致的温度上升的问题的表面等离子体发生器。

5. 发明授权

US08325566B2 Thermally-assisted magnetic recording head having a light source at least inclined from an opposed-to-medium surface 有权
标题翻译：热辅助磁记录头具有至少相对中间表面倾斜的光源
公开(公告)号：US08325566B2
公开(公告)日：2012-12-04
申请号：US12407420
申请日：2009-03-19
申请人： Koji Shimazawa , Eiji Komura
发明人： Koji Shimazawa , Eiji Komura
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head is provided, in which a light source with a sufficient power is disposed in the element-integration surface to improve mass-productivity. The head comprises, in an element-integration surface of a substrate: a light source; a waveguide for propagating light from the light source; and a magnetic pole for generating write field. Further, the edge along optical axis of the light source is set to be parallel with or inclined from the edge on the opposed-to-medium surface side of the element-integration surface. In the head, since the light source is disposed in the element-integration surface, the construction of the optical system can be completed in the stage of a wafer process. This construction can be relatively facilitated and simplified; thus, mass-productivity in the head manufacturing can be improved. Further, a light source with a sufficient power (cavity length) can be disposed in the element-integration surface.
摘要翻译：提供一种热辅助磁记录头，其中具有足够功率的光源设置在元件整合表面中以提高批量生产率。头部包括在基板的元件集成表面中：光源; 用于从光源传播光的波导; 以及用于产生写入场的磁极。此外，沿着光源的光轴的边缘被设定为与元件整合表面的相对中介表面侧上的边缘平行或倾斜。在磁头中，由于光源设置在元件集成表面中，所以可以在晶片工艺的阶段完成光学系统的结构。这种结构可以相对便利和简化; 因此，可以提高头部制造中的批量生产率。此外，具有足够功率（空腔长度）的光源可以设置在元件集成表面中。

6. 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。

7. 发明授权

US08243388B2 Heat-assisted magnetic head constituted of slider and light source unit, and manufacturing method of the head 有权
标题翻译：由滑块和光源单元构成的热辅助磁头，以及头部的制造方法
公开(公告)号：US08243388B2
公开(公告)日：2012-08-14
申请号：US12107216
申请日：2008-04-22
申请人： Koji Shimazawa , Yasuhiro Ito , Eiji Komura , Seiichi Takayama , Kosuke Tanaka
发明人： Koji Shimazawa , Yasuhiro Ito , Eiji Komura , Seiichi Takayama , Kosuke Tanaka
IPC分类号： G11B5/127 , G11B11/00
CPC分类号： G11B5/314 , G11B5/102 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a heat-assisted magnetic recording head constituted of a light source unit and a slider, which can be easily joined to each other with sufficiently high accuracy of joining position. The slider comprises a head part including a waveguide having an incident center on its end. The surface including an emission center of the light source is protruded from a joining surface of the unit substrate. And a step is provided on an end surface of the head part. The protruded portion of a lower surface of the light source has a surface contact with a wall surface of the step. Further, the distance between the wall surface of the step and the incident center of the waveguide is set to be equal to the distance between the emission center of the light source and the protruded portion of the lower surface of the light source.
摘要翻译：提供一种由光源单元和滑块构成的热辅助磁记录头，其可以以足够高的接合位置精度彼此容易地接合。滑块包括头部，其包括在其端部具有入射中心的波导。包括光源的发射中心的表面从单元基板的接合表面突出。并且在头部的端面上设置有台阶。光源的下表面的突出部分与台阶的壁面具有表面接触。此外，台阶壁面与波导入射中心之间的距离被设定为等于光源的发射中心与光源的下表面的突出部分之间的距离。

8. 发明申请

US20120188859A1 THERMALLY-ASSISTED MAGNETIC HEAD 有权
标题翻译：热辅助磁头
公开(公告)号：US20120188859A1
公开(公告)日：2012-07-26
申请号：US13013025
申请日：2011-01-25
申请人： Shinji HARA , Tsutomu Chou , Koji Shimazawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Shinji HARA , Tsutomu Chou , Koji Shimazawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B13/04 , G11B13/08
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic head that includes an air bearing surface facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element including a pole of which one edge part is positioned on the air bearing surface and that generates magnetic flux traveling toward the magnetic recording medium; a waveguide configured with a core through which light propagates and a cladding, at least one part of which extends to the air bearing surface, surrounding the periphery of the core; a plasmon generator that faces a part of the core and that extends to the air bearing surface. The plasmon generator is configured with a first part and a second part that are joined; the first part that is positioned on the air bearing surface side and that is made of a high melting point material, and the second part that is positioned away from the air bearing surface and that is made of a material with a small value ∈″, which is an imaginary component of permittivity.
摘要翻译：一种热辅助磁头，其包括面向记录介质的空气轴承表面并且在加热记录介质的同时进行磁记录的磁辅助磁头包括：磁记录元件，其包括：一个边缘部分位于空气轴承表面上并产生向磁记录介质传播的磁通量; 配置有光传播的芯的波导和包围，其至少一部分延伸到空气支承表面，围绕芯的周边; 等离子体发生器，其面向芯部的一部分并且延伸到空气轴承表面。等离子体发生器配置有连接的第一部分和第二部分; 位于空气轴承面侧并由高熔点材料制成的第一部分和远离空气轴承表面并由具有小值∈“的材料制成的第二部分，这是介电常数的虚部。

9. 发明授权

US08223597B2 Thermally assisted head having reflection mirror for propagating light 有权
标题翻译：热辅助头具有用于传播光的反射镜
公开(公告)号：US08223597B2
公开(公告)日：2012-07-17
申请号：US12820290
申请日：2010-06-22
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A magnetic head includes a magnetic head slider; and a laser diode that is positioned on a surface of a side opposite to a substrate of the magnetic head slider and that generates laser light; the magnetic head slider including: a core through which the laser light emitted from the laser diode propagates as propagating light; a cladding that covers the core and that has a refractive index that is smaller than that of the core; a near field light generating means that generates near field light from the propagating light on an air bearing surface; and a main pole for recording that is disposed adjacent to the near field light generating means and of which an edge part is positioned on the air bearing surface. The core includes a reflection layer and a seed layer, the reflection layer has a refractive index smaller than that of the core, and has a reflection surface on which laser light emitted from the laser diode reflects so as to enter the core as the propagating light, and the seed layer is positioned on a back surface of the reflection surface of the reflection layer and suppresses plasmon generation on the reflection surface.
摘要翻译：磁头包括磁头滑块; 以及激光二极管，其位于与磁头滑块的基板相反的一侧的表面上，并产生激光; 磁头滑块包括：从激光二极管发射的激光通过其传播的传播光; 覆盖芯并且折射率小于芯的折射率的包层; 近场光产生装置，其从空气轴承表面上的传播光产生近场光; 以及与近场光产生装置相邻设置并且边缘部分位于空气支承表面上的用于记录的主极。芯包括反射层和种子层，反射层的折射率小于芯的折射率，并且具有反射表面，激光二极管发射的激光以其反射的方式进入芯，作为传播光并且种子层位于反射层的反射面的背面，并抑制反射面上的等离子体发生。

10. 发明申请

US20120117791A1 METHOD FOR MANUFACTURING A THERMALLY-ASSISTED MAGNETIC HEAD 有权
标题翻译：制造热辅助磁头的方法
公开(公告)号：US20120117791A1
公开(公告)日：2012-05-17
申请号：US12947091
申请日：2010-11-16
申请人： Shinji HARA , Koji Shimazawa , Eiji Komura , Tsutomu Chou , Seiichi Takayama
发明人： Shinji HARA , Koji Shimazawa , Eiji Komura , Tsutomu Chou , Seiichi Takayama
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G02B6/4202 , G11B5/105 , G11B5/3116 , G11B5/6088 , G11B2005/0021 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： In a method for manufacturing a thermally-assisted magnetic head that includes a slider and an LD unit, the slider including an air bearing surface (ABS) that faces a recording medium and including a waveguide with a core for light propagation that extends from a light entering surface, which is different from the ABS, to the ABS, the LD unit being attached to the light entering surface of the slider, and the thermally-assisted magnetic head performing magnetic recording while heating the recording medium with near-field light that is excited from linearly polarized laser light, the LD unit is disposed in a position facing the light entering surface of the slider, a photo detector is disposed in a position facing the ABS of the slider, and a polarizer transmitting only light having a polarization component that is orthogonal to a polarization direction of the linearly polarized laser light is disposed between the ABS and the photo detector. An LD of the LD unit is activated, and the linearly polarized laser light is enabled to enter into the core from the light entering surface of the slider. Light radiated from the ABS is enabled to enter into the polarizer, and an alignment of the slider and the LD unit is performed while the photo detector detects light that is transmitted through the polarizer.
摘要翻译：在制造包括滑块和LD单元的热辅助磁头的方法中，滑块包括面向记录介质的空气轴承表面（ABS），该空气轴承表面包括具有从光线延伸的光传播用核心的波导进入与ABS不同的表面，将LD单元附着到滑块的光进入表面，并且热辅助磁头在用近场光加热记录介质的同时进行磁记录从线偏振激光激发，LD单元被设置在面向滑块的光进入表面的位置，光电检测器设置在面向滑块的ABS的位置，偏振器仅透射具有偏振分量的光，与线偏振激光的偏振方向垂直的方式设置在ABS和光电检测器之间。 LD单元的LD被激活，并且线偏振激光能够从滑块的光进入表面进入芯中。从ABS辐射的光能够进入偏振器，并且当光电检测器检测到透射通过偏振器的光时，执行滑块和LD单元的对准。

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