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61. 发明授权

US08437237B2 Light source unit including a photodetector, and thermally-assisted magnetic recording head 有权
标题翻译：光源单元包括光电检测器和热辅助磁记录头
公开(公告)号：US08437237B2
公开(公告)日：2013-05-07
申请号：US12986532
申请日：2011-01-07
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B7/00
CPC分类号： G11B5/314 , G01D5/34 , G11B5/6088 , G11B2005/0021
摘要： A light source unit includes a light source and a photodetector. The light source has an emission part for emitting light. The photodetector has a light receiving surface for receiving the light emitted from the emission part, and detects the light. The light source unit further includes a grating made of metal and disposed to extend along the light receiving surface. The grating includes a plurality of line-shaped portions that each extend in a direction intersecting the direction of travel of the light and that are located at positions different from each other along the direction of travel of the light.
摘要翻译：光源单元包括光源和光电检测器。光源具有用于发光的发射部分。光电检测器具有用于接收从发射部分发射的光的光接收表面，并检测光。光源单元还包括由金属制成并被设置为沿着光接收表面延伸的光栅。光栅包括多个线状部分，每个线状部分沿着与光的行进方向交叉的方向延伸，并且位于沿着光的行进方向彼此不同的位置。

62. 发明授权

US08264919B2 Thermal assisted magnetic recording head having spot size converter 有权
标题翻译：具有光斑尺寸转换器的热辅助磁记录头
公开(公告)号：US08264919B2
公开(公告)日：2012-09-11
申请号：US12659094
申请日：2010-02-25
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/1228 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A spot size converter according to the present invention is capable of shortening the waveguide length in the spot size converter and of promoting a size reduction of the optical waveguide itself because two cores having a taper portion are combined and those tapering angles are mutually aligned. Furthermore, spot size conversion efficiency is favorable even in a small size.
摘要翻译：根据本发明的点尺寸转换器能够缩短光斑尺寸转换器中的波导长度并且促进光波导本身的尺寸减小，因为具有锥形部分的两个芯体组合并且这些渐缩角度相互对准。此外，即使在小尺寸的情况下，光斑尺寸转换效率也是有利的。

63. 发明授权

US08243558B2 Thermally assisted magnetic head, head gimbal assembly, and hard disk apparatus 有权
标题翻译：热辅助磁头，磁头万向节组件和硬盘设备
公开(公告)号：US08243558B2
公开(公告)日：2012-08-14
申请号：US12363053
申请日：2009-01-30
申请人： Eiji Komura , Koji Shimazawa
发明人： Eiji Komura , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/102 , G11B2005/0005 , G11B2005/0021
摘要： A thermally assisted magnetic head includes a main magnetic pole for writing and a near-field light generator provided near the main magnetic pole, the near-field light generator having a non-magnetic base metal layer, a non-magnetic upper metal layer, an intermediate insulating layer interposed between the base metal layer and the upper metal layer, and the base metal layer having a V-shaped groove and also the upper metal layer having a projection facing the deepest part in the groove of the base metal layer, in a vertical cross-section parallel to a medium facing surface.
摘要翻译：热辅助磁头包括用于写入的主磁极和设置在主磁极附近的近场光发生器，具有非磁性基底金属层的近场光发生器，非磁性上金属层，介于基底金属层和上部金属层之间的中间绝缘层，以及具有V形槽的基底金属层，以及具有与基底金属层的沟槽中的最深部分相对的突起的上部金属层，垂直横截面平行于面向介质的表面。

64. 发明授权

US08130599B2 Thermally-assisted magnetic recording head comprising near-field optical device with propagation edge 有权
标题翻译：包括具有传播边缘的近场光学装置的热辅助磁记录头
公开(公告)号：US08130599B2
公开(公告)日：2012-03-06
申请号：US12616924
申请日：2009-11-12
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： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: an opposed-to-waveguide surface opposed to the waveguide with a predetermined distance; and a propagation edge provided on the side opposite to the opposed-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface can be located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF型光学器件包括：与波导相对的与波导相对的预定距离的相对的波导表面; 以及设置在与所述相对的波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的表面等离子体。在该光学系统中，产生NFL的点的产生NFL的端面可以位于与波导相对的一侧。

65. 发明申请

US20120026846A1 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：US20120026846A1
公开(公告)日：2012-02-02
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在表面等离子体发生器中激发的表面等离子体激元的会聚而导致的NF光的光密度到预定位置，同时避免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。

66. 发明申请

US20110216634A1 HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR 有权
标题翻译：热辅助磁记录头，包括等离子发生器
公开(公告)号：US20110216634A1
公开(公告)日：2011-09-08
申请号：US12719496
申请日：2010-03-08
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Shinji Hara
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Shinji Hara
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B11/00 , G11B5/02
摘要： A plasmon generator has a near-field light generating part located in a medium facing surface. The plasmon generator has an outer surface including a plasmon exciting surface and a plasmon propagating surface that face toward opposite directions. The plasmon exciting surface is substantially in contact with an evanescent light generating surface of a waveguide's core. The plasmon propagating surface is in contact with a dielectric layer that has a refractive index lower than that of the core. The plasmon exciting surface includes a first width changing portion. The plasmon propagating surface includes a second width changing portion. Each of the first and second width changing portions has a width that decreases with decreasing distance to the medium facing surface, the width being in a direction parallel to the medium facing surface and the evanescent light generating surface.
摘要翻译：等离子体发生器具有位于介质面对表面中的近场光产生部分。等离子体发生器具有外表面，其包括面向相反方向的等离子体激元表面和等离子体激元传播表面。等离子体激元表面基本上与波导芯的瞬逝光产生表面接触。等离子体激元传播表面与折射率低于芯的折射率的电介质层接触。等离子体激元表面包括第一宽度改变部分。等离子体激元传播表面包括第二宽度改变部分。第一和第二宽度改变部分中的每一个具有随着到介质面对表面的距离的减小而减小的宽度，宽度在平行于介质面向表面和渐逝光产生表面的方向上。

67. 发明授权

US08000175B2 Thermally assisted magnetic head having a semiconductor surface-emitting laser 有权
标题翻译：具有半导体表面发射激光器的热辅助磁头
公开(公告)号：US08000175B2
公开(公告)日：2011-08-16
申请号：US12363010
申请日：2009-01-30
申请人： Koji Shimazawa , Eiji Komura , Seiichi Takayama
发明人： Koji Shimazawa , Eiji Komura , Seiichi Takayama
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A thermally assisted magnetic head includes: a slider having a medium-facing surface; and a surface-emitting semiconductor laser. The slider has: a slider substrate, on which part of the medium-facing surface is formed; and a magnetic head portion, on which another part of the medium-facing surface is formed, and which has a first surface in contact with a head stacking surface of the slider substrate and a second surface opposite the first surface. The magnetic head portion has: a main magnetic pole that generates a write magnetic field from an end face on the side of the medium-facing surface; an optical waveguide core extending along the first surface and having a light exit surface at the medium-facing surface; and a diffraction grating, which is provided in the optical waveguide core or further towards the second surface than the optical waveguide core, and the refractive index of which varies periodically along the direction in which the optical waveguide core extends. The surface-emitting semiconductor laser is provided opposing the second surface so that emission light from the surface-emitting semiconductor laser is incident onto the diffraction grating, and the diffraction grating causes at least part of emission light from the surface-emitting semiconductor laser to be optically coupled to the optical waveguide core.
摘要翻译：热辅助磁头包括：具有中等面向表面的滑块; 和表面发射半导体激光器。滑块具有：形成介质面的一部分的滑块基板; 以及磁头部分，其上形成有介质相对表面的另一部分，并且具有与滑块基板的磁头堆叠表面接触的第一表面和与第一表面相对的第二表面。磁头部具有：主磁极，其从中间面的一侧的端面产生写入磁场; 光波导芯，沿着所述第一表面延伸并且在所述面向中的表面处具有光出射表面; 以及衍射光栅，其设置在光波导芯中或者比光波导芯更靠近第二表面，并且其折射率沿着光波导芯延伸的方向周期性地变化。表面发射半导体激光器被设置为与第二表面相对，使得来自表面发射半导体激光器的发射光入射到衍射光栅上，并且衍射光栅使得来自表面发射半导体激光器的至少一部分发射光为光耦合到光波导芯。

68. 发明申请

US20110110202A1 Thermally-Assisted Magnetic Recording Head Comprising Near-Field Optical Device with Propagation Edge 有权
标题翻译：热辅助磁记录头包括具有传播边的近场光学装置
公开(公告)号：US20110110202A1
公开(公告)日：2011-05-12
申请号：US12616924
申请日：2009-11-12
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： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: an opposed-to-waveguide surface opposed to the waveguide with a predetermined distance; and a propagation edge provided on the side opposite to the opposed-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface can be located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF型光学器件包括：与波导相对的与波导相对的预定距离的相对的波导表面; 以及设置在与所述相对的波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的表面等离子体。在该光学系统中，产生NFL的点的产生NFL的端面可以位于与波导相对的一侧。

69. 发明授权

US08374063B2 Heat-assisted magnetic write head, head gimbals assembly, head arm assembly, and magnetic disk device 有权
标题翻译：热辅助写磁头，头架万向节组件，头臂组件和磁盘设备
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。

70. 发明授权

US08351308B2 Thermally assisted magnetic recording head having V-shaped plasmon generator 有权
标题翻译：具有V形等离子体发生器的热辅助磁记录头
公开(公告)号：US08351308B2
公开(公告)日：2013-01-08
申请号：US12892540
申请日：2010-09-28
申请人： Tsutomu Chou , Eiji Komura , Shinji Hara , Kosuke Tanaka , Daisuke Miyauchi
发明人： Tsutomu Chou , Eiji Komura , Shinji Hara , Kosuke Tanaka , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G02B5/008 , G11B5/314 , G11B5/3163 , G11B2005/0021
摘要： A thermally assisted magnetic head includes a magnetic pole that generates a writing magnetic field from an air bearing surface (ABS); a waveguide through which light propagates; and a plasmon generator generating near-field light from a near-field light generating end surface by coupling the light thereto in a surface plasmon mode. The magnetic pole includes a convex part protruding in a substantially V-shape along a light propagation direction of the waveguide. The plasmon generator includes a substantially V-shaped part contacting the convex part, and as seen from a side of the ABS, a thickness of the plasmon generator in a direction perpendicular to convex part contacting sides gradually increases from an end in a direction away from the waveguide, the convex part contacting sides being linear sides that form the substantially V-shaped part of the plasmon generator and contacting the convex part.
摘要翻译：热辅助磁头包括从空气轴承表面（ABS）产生书写磁场的磁极; 光传播的波导; 以及等离子体发生器，其通过以表面等离子体激发模式将光耦合到其上，从近场光产生端面产生近场光。磁极包括沿波导的光传播方向大致V形突出的凸部。等离子体发生器包括接触凸部的大致V形部分，并且从ABS的侧面看，等离子体发生器在与凸部接触的方向垂直的方向上的厚度从远离方向的端部逐渐增加所述波导，所述凸部接触侧为直线侧，其形成所述等离子体发生器的大致V形部分并接触所述凸部。

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