公开(公告)号：US20100103553A1

公开(公告)日：2010-04-29

申请号：US12260639

申请日：2008-10-29

申请人： Koji Shimazawa ,  Eiji Komura ,  Yasuhiro Ito ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Daisuke Miyauchi ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Eiji Komura ,  Yasuhiro Ito ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Daisuke Miyauchi ,  Kosuke Tanaka

IPC分类号： G11B5/02 ,  G21G4/00

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.

摘要翻译： 提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。 表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。 该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。 传播表面等离子体激元的边缘是非常窄的传播区域。 因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到 可靠地到达端面。

公开(公告)号：US20090168220A1

公开(公告)日：2009-07-02

申请号：US12204452

申请日：2008-09-04

申请人： Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka ,  Seiichi Takayama ,  Hitoshi Hatate

发明人： Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka ,  Seiichi Takayama ,  Hitoshi Hatate

IPC分类号： G11B5/02 ,  B44C1/22

CPC分类号： G11B5/314 ,  G11B2005/0021

摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.

摘要翻译： 当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。 通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。 由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端 被非常靠近在一起，并且可以执行高密度记录。

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：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：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。

公开(公告)号：US20110205661A1

公开(公告)日：2011-08-25

申请号：US12659095

申请日：2010-02-25

申请人： Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka

发明人： Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka

IPC分类号： G11B5/02 ,  G02F1/035 ,  G02B6/00

CPC分类号： G02B6/1226 ,  B82Y20/00 ,  G02B6/1228 ,  G11B5/314 ,  G11B2005/0005 ,  G11B2005/0021

摘要： An optical waveguide of the present invention is an optical waveguide in order to directly introduce light beams emitted from a light emitting element. In a core that is a waveguide through which light propagates, a concave part is formed that is a depression in a light incident end surface that is one side where light enters. Therefore, an optical waveguide is realized that can obtain a large optical coupling efficiency is possible by the operation of phase alignment in the concave part.

摘要翻译： 本发明的光波导是光波导，用于直接引入从发光元件发射的光束。 在作为光传播的波导的芯中，形成作为光入射的一侧的光入射端面的凹部的凹部。 因此，通过在凹部中的相位对准的操作，可以获得可以获得大的光耦合效率的光波导。

公开(公告)号：US20080158709A1

公开(公告)日：2008-07-03

申请号：US12003452

申请日：2007-12-26

申请人： Kosuke Tanaka ,  Koji Shimazawa ,  Eiji Komura

发明人： Kosuke Tanaka ,  Koji Shimazawa ,  Eiji Komura

IPC分类号： G11B5/02

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B2005/0002 ,  G11B2005/0021

摘要： A thermally assisted magnetic head comprises: a slider substrate, a first surface located opposite to a medium-facing surface, and side surfaces located between the medium-facing surface and the first surface; a magnetic head portion having a near-field light generator on the medium-facing surface side, and a magnetic recording element, the magnetic head portion being fixed to one of the side surfaces; and a laser diode element a relative position of which to the slider substrate is fixed so that emitted light thereof can reach the near-field light generator; a relation of λin

摘要翻译： 一种热辅助磁头包括：滑块基板，与介质相对表面相对的第一表面和位于介质相对表面和第一表面之间的侧表面; 磁头部分，其在面向介质的表面侧上具有近场光产生器;以及磁记录元件，磁头部分固定在一个侧表面上; 并且激光二极管元件的相对位置固定到滑块基板上，使得其发射光可以到达近场光发生器; 满足lambdain

公开(公告)号：US08406091B2

公开(公告)日：2013-03-26

申请号：US12832593

申请日：2010-07-08

申请人： Koji Shimazawa ,  Kosuke Tanaka ,  Eiji Komura ,  Takashi Honda

发明人： Koji Shimazawa ,  Kosuke Tanaka ,  Eiji Komura ,  Takashi Honda

IPC分类号： G11B11/00

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

摘要： Provided is a thermally-assisted magnetic recording head in which a slider including an optical system is joined with a light source unit. The light source unit comprises: a unit substrate including a joining surface joined with the slider and a source-installation surface adjacent to the joining surface; a light source provided in the source-installation surface and emits light for thermal assist; and a photodetector section formed inside the unit substrate, a light-receiving portion of the photodetector section for receiving light emitted from a rear light-emission center being located on the source-installation surface side. The light source unit includes the photodetector section that enables constant monitoring of light output from the light source. Accordingly, feedback adjustment of the light output can be accomplished. Further, since the rear light-emission center and the light-receiving portion can be located sufficiently close to each other, the light output can be monitored with a higher efficiency.

摘要翻译： 提供了一种热辅助磁记录头，其中包括光学系统的滑块与光源单元接合。 光源单元包括：单元基板，包括与滑块接合的接合表面和邻近接合表面的源安装表面; 设置在源安装表面中并发射用于热辅助的光的光源; 以及形成在所述单元基板内的光检测器部分，所述光电检测器部分的光接收部分用于接收从位于所述源安装表面侧的后发光中心发射的光。 光源单元包括能够恒定地监视来自光源的光输出的光电检测器部分。 因此，可以实现光输出的反馈调整。 此外，由于后发光中心和受光部分可以彼此充分接近，所以能够以更高的效率监视光输出。

公开(公告)号：US08000178B2

公开(公告)日：2011-08-16

申请号：US12260639

申请日：2008-10-29

申请人： Koji Shimazawa ,  Eiji Komura ,  Yasuhiro Ito ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Daisuke Miyauchi ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Eiji Komura ,  Yasuhiro Ito ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Daisuke Miyauchi ,  Kosuke Tanaka

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.

摘要翻译： 提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。 表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。 该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。 传播表面等离子体激元的边缘是非常窄的传播区域。 因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到 可靠地到达端面。

公开(公告)号：US07876646B2

公开(公告)日：2011-01-25

申请号：US12003452

申请日：2007-12-26

申请人： Kosuke Tanaka ,  Koji Shimazawa ,  Eiji Komura

发明人： Kosuke Tanaka ,  Koji Shimazawa ,  Eiji Komura

IPC分类号： G11B11/00

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B2005/0002 ,  G11B2005/0021

摘要： A thermally assisted magnetic head comprises: a slider substrate, a first surface located opposite to a medium-facing surface, and side surfaces located between the medium-facing surface and the first surface; a magnetic head portion having a near-field light generator on the medium-facing surface side, and a magnetic recording element, the magnetic head portion being fixed to one of the side surfaces; and a laser diode element a relative position of which to the slider substrate is fixed so that emitted light thereof can reach the near-field light generator; a relation of λin

摘要翻译： 一种热辅助磁头包括：滑块基板，与介质相对表面相对的第一表面和位于介质相对表面和第一表面之间的侧表面; 磁头部分，其在面向介质的表面侧上具有近场光产生器;以及磁记录元件，磁头部分固定在一个侧表面上; 并且激光二极管元件的相对位置固定到滑块基板上，使得其发射光可以到达近场光发生器; 满足λin<λmax的关系，其中λin是在发射光到达近场光发生器之前来自激光二极管元件的发射光的波长，λmax是产生效率的照射光的波长 由近场光发生器产生的近场光最大。