公开(公告)号：US20100195238A1

公开(公告)日：2010-08-05

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： G11B5/02

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。

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。

公开(公告)号：US20110205660A1

公开(公告)日：2011-08-25

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： G11B5/02 ,  G02B6/26 ,  G02B6/036

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：US20110090587A1

公开(公告)日：2011-04-21

申请号：US12581385

申请日：2009-10-19

申请人： Tsutomu Chou ,  Eiji Komura ,  Koji Shimazawa ,  Seiichi Takayama

发明人： Tsutomu Chou ,  Eiji Komura ,  Koji Shimazawa ,  Seiichi Takayama

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a surface-emitting type light source for emitting substantially collimated beam, a first diffraction optical element for focusing the substantially collimated beam emitted from the surface-emitting type light source, a second diffraction optical element for collimating the light beam focused by the first diffraction optical element, a waveguide integrally formed with the second diffraction optical element and made of the material as that of second diffraction optical element, the light beam collimated by the second diffraction optical element being incident to the waveguide, an optical-path direction conversion element for converting a direction of an optical path of the incident light beam to a propagation direction of the waveguide, the propagation direction being toward an opposed-to-medium surface, and a magnetic pole for generating write field from its end face on the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括用于发射基本上准直的光束的表面发射型光源，用于聚焦从表面发射型光源发射的基本上准直的光束的第一衍射光学元件，用于准直 由第一衍射光学元件聚焦的光束，与第二衍射光学元件整体形成并由第二衍射光学元件的材料制成的波导，由第二衍射光学元件准直的光束入射到波导， 光路方向转换元件，用于将入射光束的光路的方向转换为波导的传播方向，传播方向朝向相对中间的表面;以及磁极，用于从其产生写入场 在相对中的表面侧上的端面。

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：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。

公开(公告)号：US20110122737A1

公开(公告)日：2011-05-26

申请号：US12622962

申请日：2009-11-20

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： G11B11/00 ,  G11B5/02 ,  G11B5/48

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head is provided, in which the light-source output can be adjusted according to its variation by environmental influences and over time. The head comprises: a light source; a write head element provided in a element-integration surface; an optical system provided in the element-integration surface and configured to guide a light emitted from the light source to the vicinity of one end of the write head element; and a light detector for monitoring the light-source output, provided in the element-integration surface and comprising a light-receiving surface covering an area directly above at least a portion of the optical system. This light detector with such a light-receiving surface can detect a leakage light emitted from the optical system as a monitoring light. Therefore, feedback adjustment of the light-source output can be realized to stabilize the intensity of light for thermal-assist applied to a magnetic recording medium.

摘要翻译： 提供了一种热辅助磁记录头，其中可以根据环境影响和随时间的变化来调节光源输出。 头包括：光源; 设置在元件集成表面中的写入头元件; 光学系统，设置在所述元件一体化表面中并且被配置为将从所述光源发射的光引导到所述写入头元件的一端附近; 以及光检测器，用于监测元件整合表面中的光源输出，并包括覆盖光学系统的至少一部分正上方的区域的光接收表面。 具有这种光接收表面的光检测器可以检测从光学系统发射的泄漏光作为监测光。 因此，可以实现光源输出的反馈调整，以稳定施加到磁记录介质的热辅助的光的强度。

公开(公告)号：US20110228420A1

公开(公告)日：2011-09-22

申请号：US12728890

申请日：2010-03-22

申请人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

发明人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A plasmon generator has an outer surface including a plasmon exciting part, and has a near-field light generating part located in a medium facing surface. The plasmon exciting part faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween. The outer surface of the plasmon generator further includes first and second inclined surfaces that are each connected to the plasmon exciting part. The first and second inclined surfaces increase in distance from each other with increasing distance from the plasmon exciting part. The plasmon generator includes a shape changing portion where the angle of inclination of each of the first and second inclined surfaces with respect to the evanescent light generating surface increases continuously with decreasing distance to the medium facing surface.

摘要翻译： 等离子体发生器具有包括等离子体激元部分的外表面，并且具有位于介质面对表面中的近场光产生部分。 等离子激元激发部分面对波导芯的渐逝光产生表面，其间具有预定的距离。 等离子体发生器的外表面还包括各自连接到等离子体激元部分的第一和第二倾斜表面。 第一和第二倾斜表面随距离等离激子激发部分的距离增加而彼此间距离增加。 等离子体发生器包括形状改变部分，其中第一和第二倾斜表面中的每一个相对于ev逝光产生表面的倾斜角度随着到介质面向表面的距离的减小而连续增加。

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。