公开(公告)号：US07911882B2

公开(公告)日：2011-03-22

申请号：US11604225

申请日：2006-11-27

申请人： Koji Shimazawa ,  Katsumichi Tagami

发明人： Koji Shimazawa ,  Katsumichi Tagami

IPC分类号： G11B7/125 ,  G11B7/135 ,  G11B11/10

CPC分类号： G11B5/314 ,  G11B5/3136 ,  G11B5/3967 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

摘要翻译： 提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。 头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状 并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜 并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

公开(公告)号：US07773342B2

公开(公告)日：2010-08-10

申请号：US11698145

申请日：2007-01-26

申请人： Koji Shimazawa ,  Katsumichi Tagami

发明人： Koji Shimazawa ,  Katsumichi Tagami

IPC分类号： G11B5/39

CPC分类号： G11B5/314 ,  G11B5/3967 ,  G11B2005/0021

摘要： A thin-film magnetic head for a heat-assisted magnetic recording which can perform a reliable writing immediately only on a desired track by applying a near-field light to a desired position and range is provided. The head comprises: an electromagnetic coil element for writing data signals, having a pole end reaching a head end surface; and a near-field-light-generating portion for heating a portion of a magnetic recording medium during write operation by generating a near-field light, having a generation end reaching the head end surface and provided adjacent to the pole end and in the leading side of the pole end, and a shape of the generation end on the head end surface being a trapezoid with a shorter edge on the trailing side, or being a triangle with an apex on the trailing side and with a bottom on the leading side.

摘要翻译： 提供了一种用于热辅助磁记录的薄膜磁头，其可以通过将近场光施加到期望的位置和范围来立即仅在期望的轨道上执行可靠的写入。 头部包括：用于写入数据信号的电磁线圈元件，具有到达头端表面的极端; 以及近场光产生部分，用于通过产生近场光来在写入操作期间加热磁记录介质的一部分，其具有到达头端表面并且邻近极端设置的前端 并且头端面上的发生端的形状是在后侧具有较短边缘的梯形，或者是在后侧具有顶点且在前侧具有底部的三角形。

公开(公告)号：US20070177302A1

公开(公告)日：2007-08-02

申请号：US11698145

申请日：2007-01-26

申请人： Koji Shimazawa ,  Katsumichi Tagami

发明人： Koji Shimazawa ,  Katsumichi Tagami

IPC分类号： G11B5/147 ,  G11B5/02

CPC分类号： G11B5/314 ,  G11B5/3967 ,  G11B2005/0021

摘要： A thin-film magnetic head for a heat-assisted magnetic recording which can perform a reliable writing immediately only on a desired track by applying a near-field light to a desired position and range is provided. The head comprises: an electromagnetic coil element for writing data signals, having a pole end reaching a head end surface; and a near-field-light-generating portion for heating a portion of a magnetic recording medium during write operation by generating a near-field light, having a generation end reaching the head end surface and provided adjacent to the pole end and in the leading side of the pole end, and a shape of the generation end on the head end surface being a trapezoid with a shorter edge on the trailing side, or being a triangle with an apex on the trailing side and with a bottom on the leading side.

摘要翻译： 提供了一种用于热辅助磁记录的薄膜磁头，其可以通过将近场光施加到期望的位置和范围来立即仅在期望的轨道上执行可靠的写入。 头部包括：用于写入数据信号的电磁线圈元件，具有到达头端表面的极端; 以及近场光产生部分，用于通过产生近场光来在写入操作期间加热磁记录介质的一部分，其具有到达头端表面并且邻近极端设置的前端 并且头端面上的发生端的形状是在后侧具有较短边缘的梯形，或者是在后侧具有顶点且在前侧具有底部的三角形。

公开(公告)号：US20070139818A1

公开(公告)日：2007-06-21

申请号：US11604225

申请日：2006-11-27

申请人： Koji Shimazawa ,  Katsumichi Tagami

发明人： Koji Shimazawa ,  Katsumichi Tagami

IPC分类号： G11B5/147 ,  G11B5/02 ,  G11B5/48

CPC分类号： G11B5/314 ,  G11B5/3136 ,  G11B5/3967 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

摘要翻译： 提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。 头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状 并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜 并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

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。

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。

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。

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。

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。

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。