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：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：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：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：US07821732B2

公开(公告)日：2010-10-26

申请号：US12237810

申请日：2008-09-25

申请人： Eiji Komura ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Kosuke Tanaka ,  Koji Shimazawa

发明人： Eiji Komura ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Kosuke Tanaka ,  Koji Shimazawa

IPC分类号： G11B5/02

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

摘要： A thermally assisted magnetic head according to the present invention includes: a medium-facing surface, a main magnetic pole provided on the medium-facing surface, and a plasmon antenna provided on the medium-facing surface in the vicinity of the main magnetic pole, wherein the plasmon antenna is shaped as a triangular flat plate having first, second and third corners, such that the distance from the first corner to the main magnetic pole is shorter than the distance from the second corner to the main magnetic pole and the distance from the third corner to the main magnetic pole, and the interior angle α of the first corner, the interior angle β of the second corner and the interior angle γ of the third corner satisfy relationships α

公开(公告)号：US08335052B2

公开(公告)日：2012-12-18

申请号：US12237767

申请日：2008-09-25

申请人： Seiichi Takayama ,  Eiji Komura ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Koji Shimazawa

发明人： Seiichi Takayama ,  Eiji Komura ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Koji Shimazawa

IPC分类号： G11B5/127

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

摘要： A plasmon antenna of the present invention is used in a thermally assisted magnetic head that includes: a medium-facing surface set, parallel to an XY plane; a magnetic pole for writing, extending toward the medium-facing surface, and a plasmon antenna comprising a pair of small metal bodies irradiated with excitation light for near-field light generation propagating in a Z-axis direction. Respective corners of the small metal bodies are spaced apart opposite each other along a TE mode direction of the excitation light. A distance between the corners gives the shortest distance between the small metal bodies, and a distance from each corner to the leading end of the magnetic pole gives a shortest distance from the small metal bodies to the leading end.

摘要翻译： 本发明的等离子体天线用于热辅助磁头，其包括：平行于XY平面的面向中间的表面组; 用于写入的磁极，朝向介质中的表面延伸;以及等离子体激元，其包括用激励光照射的一对小的金属体，用于沿Z轴方向传播的近场光产生。 小金属体的各个角部沿着激发光的TE模式方向相互间隔开。 拐角之间的距离给出了小金属体之间的最短距离，从磁极的每个拐角到前端的距离从小金属体到前端都具有最短的距离。

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：US08149654B2

公开(公告)日：2012-04-03

申请号：US12729560

申请日：2010-03-23

申请人： Eiji Komura ,  Shinji Hara ,  Seiichi Takayama ,  Koji Shimazawa

发明人： Eiji Komura ,  Shinji Hara ,  Seiichi Takayama ,  Koji Shimazawa

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0021

摘要： A waveguide has a core through which laser light can propagate in a TM mode, that has a rectangular cross section perpendicular to a propagative direction of the laser light, and through which the laser light can propagate in a fundamental mode in which only one portion exists on the cross section of the core where a light intensity of the laser light becomes maximal, and a higher order mode in which two or more portions exist where the light intensity becomes maximal, a clad surrounding the core, and a light absorbing element in the clad, and wherein a distance between the light absorbing element and the core is shorter than a penetration length of evanescent light in the higher order mode, but is longer than a penetration length of evanescent light in the fundamental mode.

摘要翻译： 波导具有核，激光可以以TM模式传播，其具有与激光的传播方向垂直的矩形横截面，激光可以以仅存在一个部分的基本模式传播 在激光的光强度变得最大的核心的横截面上，以及存在光强度变得最大的两个以上部分的高阶模式，围绕芯的包层，以及光吸收元件 并且其中所述光吸收元件和所述芯之间的距离比所述高阶模式中的渐逝光的穿透长度短，但是比所述基模中的渐逝光的穿透长度更长。

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：US07835102B2

公开(公告)日：2010-11-16

申请号：US12239141

申请日：2008-09-26

申请人： Seiichi Takayama ,  Eiji Komura ,  Kosuke Tanaka ,  Daisuke Miyauchi ,  Koji Shimazawa

发明人： Seiichi Takayama ,  Eiji Komura ,  Kosuke Tanaka ,  Daisuke Miyauchi ,  Koji Shimazawa

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a plasmon antenna in which a near-field light having a sufficient intensity is generated only in a desired location. The plasmon antenna comprises an end surface on a side where a near-field light is generated; the end surface is flat and has a shape with at least three vertexes or rounded corners; and an end surface of the plasmon antenna which is opposite to the flat end surface and receives light, is inclined with respect to the flat end surface so as to become closer to the flat end surface toward one of the at least three vertexes or rounded corners. When the light-receiving end surface of the plasmon antenna is irradiated with the light, a near-field light having a sufficient intensity can be generated at only the vertex or rounded corner toward which the entire plasmon antenna becomes thinner.

摘要翻译： 提供了一种等离子体激元天线，其中仅在期望的位置产生具有足够强度的近场光。 等离子体激元天线包括在产生近场光的一侧上的端面; 端面平坦，具有至少三个顶点或圆角的形状; 以及等离子体激元天线的与平坦端面相对并且接收光的端面相对于平坦端面倾斜，以朝向至少三个顶点或圆角中的一个更接近平坦端面 。 当等离子体激元的光接收端面用光照射时，只能在整个等离子体天线变薄的顶点或圆角处产生具有足够强度的近场光。