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：US07855937B2

公开(公告)日：2010-12-21

申请号：US12205484

申请日：2008-09-05

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 ,  G11B5/4866 ,  G11B11/10536 ,  G11B11/1058 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a near-field light generating element capable of avoiding excessive temperature rise, which comprises a waveguide and a near-field light generating layer. The layer comprises: a propagation surface on which surface plasmon excited by the light propagates; and a near-field light generating end at which near-field light is generated. The end is one end of the propagation surface. And a portion of the side surface of the waveguide is opposed to a portion of the propagation surface of the near-field light generating layer with a predetermined spacing so that the light propagating through the waveguide is coupled with the near-field light generating layer in a surface plasmon mode. The near-field light generating layer is preferably tapered toward the near-field light generating end.

摘要翻译： 本发明提供能够避免温度过高的近场光发生元件，其包括波导管和近场光产生层。 该层包括：由光激发的表面等离子体激发的传播表面; 以及产生近场光的近场光产生端。 最后是传播表面的一端。 并且波导的侧面的一部分与近场光产生层的传播表面的一部分以预定的间隔相对，使得通过波导传播的光与近场光产生层耦合 表面等离子体激元模式。 近场光产生层优选地朝向近场光产生端逐渐变细。

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：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：US08116172B2

公开(公告)日：2012-02-14

申请号：US12320930

申请日：2009-02-09

申请人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

发明人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10534 ,  G11B11/1058 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A near-field light generating device includes: a base having a top surface; a waveguide that allows laser light to propagate therethrough and is disposed above the top surface of the base; and a surface plasmon generating element that is disposed above the top surface of the base so as to adjoin the waveguide in a direction parallel to the top surface of the base. The waveguide has a side surface that faces the surface plasmon generating element. The surface plasmon generating element includes: a coupling part that is opposed to a part of the side surface of the waveguide with spacing therebetween and causes excitation of a surface plasmon by coupling with evanescent light occurring from the part of the side surface; and a near-field light generating part that generates near-field light based on the surface plasmon excited at the coupling part.

摘要翻译： 近场光产生装置包括：具有顶表面的底座; 波导，其允许激光通过其传播并设置在基座的顶表面上方; 以及表面等离子体激元产生元件，其设置在所述基座的顶表面之上，以便在与所述基座的顶表面平行的方向上邻接所述波导。 波导具有面向表面等离子体激元产生元件的侧表面。 表面等离子体发生元件包括：耦合部分，其与波导的侧表面的一部分相对，并且通过与从侧表面的部分发生的渐逝光耦合而引起表面等离子体激发; 以及基于在耦合部激发的表面等离子体激元产生近场光的近场光产生部。

公开(公告)号：US20100202256A1

公开(公告)日：2010-08-12

申请号：US12320930

申请日：2009-02-09

申请人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

发明人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

IPC分类号： G11B11/00 ,  G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10534 ,  G11B11/1058 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A near-field light generating device includes: a base having a top surface; a waveguide that allows laser light to propagate therethrough and is disposed above the top surface of the base; and a surface plasmon generating element that is disposed above the top surface of the base so as to adjoin the waveguide in a direction parallel to the top surface of the base. The waveguide has a side surface that faces the surface plasmon generating element. The surface plasmon generating element includes: a coupling part that is opposed to a part of the side surface of the waveguide with spacing therebetween and causes excitation of a surface plasmon by coupling with evanescent light occurring from the part of the side surface; and a near-field light generating part that generates near-field light based on the surface plasmon excited at the coupling part.

摘要翻译： 近场光产生装置包括：具有顶表面的底座; 波导，其允许激光通过其传播并设置在基座的顶表面上方; 以及表面等离子体激元产生元件，其设置在所述基座的顶表面之上，以便在与所述基座的顶表面平行的方向上邻接所述波导。 波导具有面向表面等离子体激元产生元件的侧表面。 表面等离子体发生元件包括：耦合部分，其与波导的侧表面的一部分相对，并且通过与从侧表面的部分发生的渐逝光耦合而引起表面等离子体激发; 以及基于在耦合部激发的表面等离子体激元产生近场光的近场光产生部。

公开(公告)号：US20100079895A1

公开(公告)日：2010-04-01

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 ,  G21G4/00 ,  G11B5/48

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，以朝着至少三个顶点或圆角中的一个变得更靠近平坦端面 。 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。

公开(公告)号：US08243388B2

公开(公告)日：2012-08-14

申请号：US12107216

申请日：2008-04-22

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 ,  G11B11/00

CPC分类号： G11B5/314 ,  G11B5/102 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a heat-assisted magnetic recording head constituted of a light source unit and a slider, which can be easily joined to each other with sufficiently high accuracy of joining position. The slider comprises a head part including a waveguide having an incident center on its end. The surface including an emission center of the light source is protruded from a joining surface of the unit substrate. And a step is provided on an end surface of the head part. The protruded portion of a lower surface of the light source has a surface contact with a wall surface of the step. Further, the distance between the wall surface of the step and the incident center of the waveguide is set to be equal to the distance between the emission center of the light source and the protruded portion of the lower surface of the light source.

摘要翻译： 提供一种由光源单元和滑块构成的热辅助磁记录头，其可以以足够高的接合位置精度彼此容易地接合。 滑块包括头部，其包括在其端部具有入射中心的波导。 包括光源的发射中心的表面从单元基板的接合表面突出。 并且在头部的端面上设置有台阶。 光源的下表面的突出部分与台阶的壁面具有表面接触。 此外，台阶壁面与波导入射中心之间的距离被设定为等于光源的发射中心与光源的下表面的突出部分之间的距离。

公开(公告)号：US08116034B2

公开(公告)日：2012-02-14

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 ,  G11B5/127

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：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。