公开(公告)号：US08223596B2

公开(公告)日：2012-07-17

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： G11B11/00

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;以及用于从其产生写入场的磁极 在相对中的表面侧上的端面。

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：US08341825B2

公开(公告)日：2013-01-01

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 ,  H04R31/00

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： A thermally-assisted magnetic head includes a slider including an air bearing surface (ABS) and a waveguide with a core that extends from a light entering surface to the ABS, and a laser diode (LD) unit attached to the light entering surface. The LD unit faces the light entering surface, and a photo detector faces the ABS. A polarizer that only transmits light having a polarization component orthogonal to a polarization direction of 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 enters the core from the light entering surface. Light radiated from the ABS enters the polarizer, and an alignment of the slider and the LD unit is performed while the photo detector detects the light transmitted through the polarizer.

摘要翻译： 热辅助磁头包括滑动件，其包括空气轴承表面（ABS）和具有从光进入表面延伸到ABS的芯的波导和附接到光进入表面的激光二极管（LD）单元。 LD单元面向光入射表面，光检测器面向ABS。 只有透射具有与线偏振激光的偏振方向正交的偏振分量的光的偏振器设置在ABS和光电检测器之间。 LD单元的LD被激活，并且线偏振激光从光入射表面进入芯。 从ABS辐射的光进入偏振器，并且在光电检测器检测透过偏振器的光时，执行滑块和LD单元的对准。

公开(公告)号：US20110026377A1

公开(公告)日：2011-02-03

申请号：US12512249

申请日：2009-07-30

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

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

IPC分类号： G11B11/00 ,  G11B5/02

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 having sufficiently high output power for performing thermal-assist is disposed in the element-integration surface of the substrate to achieve improved mass-productivity. The head includes: a light source having a multilayered structure including a photonic-band layer and having a light-emitting surface opposed to the element-integration surface; a diffraction optical element that converges the emitted light; a light-path changer that changes the direction of the converged light; a waveguide that propagates the direction-changed light toward the opposed-to-medium surface; and a magnetic pole that generates write field. The surface-emitting type light source includes a photonic-band layer having a periodic structure in which a light from an active region resonates, and thus emits laser light on a quite different principle from a VCSEL. Therefore, the light source can be disposed in the element-integration surface, even though having sufficiently high output power.

摘要翻译： 提供了一种热辅助磁记录头，其中具有足够高输出功率的用于进行热辅助的光源设置在基板的元件集成表面中，以实现提高的批量生产率。 头包括：具有包括光子带层并且具有与元件一体化表面相对的发光表面的多层结构的光源; 会聚发射光的衍射光学元件; 改变会聚光的方向的光路改变器; 波导，其将所述方向改变的光传播到所述相对中介表面; 以及产生写入场的磁极。 表面发射型光源包括具有周期性结构的光子带层，其中来自有源区的光谐振，从而以与VCSEL完全不同的原理发射激光。 因此，即使具有足够高的输出功率，也可以将光源配置在元件一体化表面。

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：US08194509B2

公开(公告)日：2012-06-05

申请号：US12512249

申请日：2009-07-30

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

发明人： Koji Shimazawa ,  Seiichi Takayama ,  Tsutomu Chou ,  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 having sufficiently high output power for performing thermal-assist is disposed in the element-integration surface of the substrate to achieve improved mass-productivity. The head includes: a light source having a multilayered structure including a photonic-band layer and having a light-emitting surface opposed to the element-integration surface; a diffraction optical element that converges the emitted light; a light-path changer that changes the direction of the converged light; a waveguide that propagates the direction-changed light toward the opposed-to-medium surface; and a magnetic pole that generates write field. The surface-emitting type light source includes a photonic-band layer having a periodic structure in which a light from an active region resonates, and thus emits laser light on a quite different principle from a VCSEL. Therefore, the light source can be disposed in the element-integration surface, even though having sufficiently high output power.

摘要翻译： 提供了一种热辅助磁记录头，其中具有足够高输出功率的用于进行热辅助的光源设置在基板的元件集成表面中，以实现提高的批量生产率。 头包括：具有包括光子带层并且具有与元件一体化表面相对的发光表面的多层结构的光源; 会聚发射光的衍射光学元件; 改变会聚光的方向的光路改变器; 波导，其将所述方向改变的光传播到所述相对中介表面; 以及产生写入场的磁极。 表面发射型光源包括具有周期性结构的光子带层，其中来自有源区的光谐振，从而以与VCSEL完全不同的原理发射激光。 因此，即使具有足够高的输出功率，也可以将光源配置在元件一体化表面。

公开(公告)号：US08098547B2

公开(公告)日：2012-01-17

申请号：US12720083

申请日：2010-03-09

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： G02B6/1228 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： An optical waveguide, on account of its ability to apply phase resonance of a wavelength and of a first and second triangular plate-like spot size converter members formed of the same material as a core material and being arranged and formed in a substantially symmetrical structure, can promote shortening of the waveguide length and contrive to reduce the size of the optical waveguide itself. Further, an optical waveguide having excellent spot size conversion efficiency can be obtained even in a reduced size.

摘要翻译： 光波导由于其施加波长的相位谐振的能力以及由与芯材相同的材料形成并以基本对称的结构形式构成的第一和第二三角形板状光斑尺寸转换器部件， 可以促进波导长度的缩短并且有助于减小光波导本身的尺寸。 此外，即使在减小的尺寸的情况下也可以获得具有优异的光斑尺寸转换效率的光波导。

公开(公告)号：US08547805B1

公开(公告)日：2013-10-01

申请号：US13432245

申请日：2012-03-28

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

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

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/607 ,  G11B2005/0021

摘要： A thermal assisted magnetic recording head includes a dielectric waveguide that is configured to propagate propagation light a metal waveguide that is provided facing the dielectric waveguide and that couples to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, thereby generating and propagating surface plasmon, a near-field light generator that is exposed on an air bearing surface facing a magnetic recording medium either at an end part of the metal waveguide or at a position facing the end part of the metal waveguide, and that generates near-field light from the surface plasmon, a magnetic pole for magnetic recording that is exposed on the air bearing surface, and a temperature sensor that is arranged inside the dielectric waveguide.

摘要翻译： 热辅助磁记录头包括电介质波导，其被配置为传播传播光，所述介质波导设置成面对介质波导并且以表面等离子体模式耦合到传播通过介质波导的传播光，从而产生和传播表面 等离子体激元，近场光发生器，其在面向金属波导的端部的面向磁记录介质的空气轴承表面上或面对金属波导的端部的位置处暴露，并且产生近场光 从表面等离子体激元，暴露在空气轴承表面上的用于磁记录的磁极，以及布置在电介质波导内部的温度传感器。