公开(公告)号：US08462593B1

公开(公告)日：2013-06-11

申请号：US13367767

申请日：2012-02-07

申请人： Eiji Komura ,  Koji Shimazawa ,  Tsutomu Chou ,  Shinji Hara ,  Kosuke Tanaka

发明人： Eiji Komura ,  Koji Shimazawa ,  Tsutomu Chou ,  Shinji Hara ,  Kosuke Tanaka

IPC分类号： G11B11/00

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

摘要： A magnetic head includes a dielectric waveguide to propagate propagation light; a metal waveguide facing the dielectric waveguide, coupling to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, generating first surface plasmon with larger wavenumber than that of the propagation light, and propagating the first surface plasmon; a near-field light generating element facing the metal waveguide and extending to ABS, coupling to the first surface plasmon propagating on the metal waveguide in a surface plasmon mode, generating second surface plasmon with wavenumber larger than that of the first surface plasmon, propagating the second surface plasmon to an end part on the ABS side, and generating near-field light at the end part on the ABS side; and a recording magnetic pole provided in the vicinity of the near-field light generating element and having an end part positioned on the ABS.

摘要翻译： 磁头包括传播传播光的电介质波导; 面向电介质波导的金属波导，以表面等离子体模式耦合到通过电介质波导传播的传播光，产生波数比传播光波数大的第一表面等离子体，并传播第一表面等离子体; 面向金属波导并延伸到ABS的近场光产生元件，以表面等离子体模式耦合到在金属波导上传播的第一表面等离子体激元，产生波数大于第一表面等离子体波的第二表面等离子体，传播 第二表面等离子体激元到ABS侧的端部，并且在ABS侧的端部产生近场光; 以及设置在近场光产生元件附近并具有位于ABS上的端部的记录磁极。

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。

公开(公告)号：US08424191B2

公开(公告)日：2013-04-23

申请号：US12648079

申请日：2009-12-28

申请人： Koji Shimazawa ,  Seiichi Takayama ,  Eiji Komura ,  Osamu Shindo ,  Takashi Honda

发明人： Koji Shimazawa ,  Seiichi Takayama ,  Eiji Komura ,  Osamu Shindo ,  Takashi Honda

IPC分类号： G11B11/12

CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021 ,  Y10T29/49032 ,  Y10T29/49037 ,  Y10T29/49055 ,  Y10T29/49059

摘要： A method for manufacturing a thermally-assisted magnetic recording head is provided, in which joined are: a light source unit that includes a light source having a surface including a light-emission center on the joining surface side of a unit substrate; and a slider that includes an optical system having a light-receiving end surface reaching a back surface opposite to the opposed-to-medium surface. This method utilizes “semi-active alignment” that uses an alignment light, and comprises steps of: causing a light to enter the light source from a surface opposite to the light-emission center; detecting the light that has passed through the light source and is emitted from the light-emission center to align the light-emission center with the light-receiving end surface of the slider; and bonding the light source unit to the slider. This manufacturing method can achieve the alignment with a sufficiently high alignment accuracy in a short processing time.

摘要翻译： 提供了一种用于制造热辅助磁记录头的方法，其中连接有：光源单元，其包括在单元基板的接合表面侧上具有包括发光中心的表面的光源; 以及包括光学系统的滑块，所述光学系统具有到达相对于中间表面的后表面的光接收端面。 该方法采用使用对准光的“半主动对准”，其包括以下步骤：使光从与发光中心相反的表面进入光源; 检测已经通过光源并从发光中心射出的光，使发光中心与滑块的受光端面对准; 并将光源单元接合到滑块。 该制造方法可以在短的处理时间内以足够高的对准精度实现对准。

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。

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。

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。

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。

公开(公告)号：US08065786B2

公开(公告)日：2011-11-29

申请号：US12108234

申请日：2008-04-23

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 ,  H04R31/00

CPC分类号： G11B5/314 ,  G11B5/102 ,  G11B5/3163 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T29/49025 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052 ,  Y10T156/1062

摘要： Provided is a manufacturing method of heat-assisted magnetic recording head, in which a light source unit can be easily joined to a slider with sufficiently high accuracy, under avoiding the excessive mechanical stress. The manufacturing method comprises the steps of: moving relatively the light source unit and the slider, while applying a sufficient voltage between an upper electrode of the light source and an electrode layer provided in the slider; and setting the light source unit and the slider in desired positions in a direction perpendicular to the element-integration surface of the slider substrate. The desired positions are positions where the light source just emits due to a surface contact between: the protruded portion of the lower surface of the light source; and the upper surface of the electrode layer, which is a portion of the wall surface of a step formed on the head part.

摘要翻译： 提供一种热辅助磁记录头的制造方法，其中光源单元可以以足够高的精度容易地接合到滑块，以避免过度的机械应力。 该制造方法包括以下步骤：在光源的上电极和设置在滑块中的电极层之间施加足够的电压，相对移动光源单元和滑块; 以及将光源单元和滑块设置在与滑动器基板的元件集成表面垂直的方向上的期望位置。 期望的位置是由于光源的下表面的突出部分之间的表面接触而光源刚刚发射的位置; 以及作为形成在头部上的台阶的壁面的一部分的电极层的上表面。

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。

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。