公开(公告)号：US08432773B2

公开(公告)日：2013-04-30

申请号：US12962878

申请日：2010-12-08

申请人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

发明人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  B82Y25/00 ,  G11B2005/0021

摘要： A thermally-assisted magnetic head that has an air bearing surface (ABS) facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element that includes a pole of which an edge part is positioned on the ABS and which generates magnetic flux traveling to the recording medium; a waveguide that is configured with a core through which light propagates and a cladding, surrounding a periphery of the core, at least one part of which extends to the ABS; a plasmon generator that faces a part of the core and that extends toward the ABS side; and a bank layer that is positioned between the plasmon generator and the pole, and of which an edge part on the ABS side protrudes relative to the plasmon generator.

摘要翻译： 具有面向记录介质的空气轴承表面（ABS）并且在加热记录介质的同时执行磁记录的热辅助磁头包括：磁记录元件，其包括边缘部分位于ABS上的极点和 其产生传播到记录介质的磁通量; 波导，其配置有光传播的芯和包围芯，围绕芯的周边，其至少一部分延伸到ABS; 等离子体发生器，其面向所述芯的一部分并朝向ABS侧延伸; 以及位于等离子体发生器和极之间的堤层，并且ABS侧上的边缘部分相对于等离子体发生器突出。

公开(公告)号：US08264920B1

公开(公告)日：2012-09-11

申请号：US13191913

申请日：2011-07-27

申请人： Tsutomu Chou ,  Eiji Komura ,  Shinji Hara ,  Daisuke Miyauchi ,  Kosuke Tanaka

发明人： Tsutomu Chou ,  Eiji Komura ,  Shinji Hara ,  Daisuke Miyauchi ,  Kosuke Tanaka

IPC分类号： G11B11/00 ,  G11B7/135

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0021

摘要： A near-field light generator includes a waveguide, a plasmon generator, and a metal layer. The waveguide includes a core having an evanescent light generating surface. The plasmon generator includes a base part, and a protruding part that protrudes from the base part toward the evanescent light generating surface. The protruding part has: a front end face located at an end in a direction parallel to the evanescent light generating surface; a band-shaped flat surface facing toward the evanescent light generating surface; and two side surfaces connected to the flat surface. In at least a portion of the protruding part, the distance between the two side surfaces increases with increasing distance from the evanescent light generating surface. The flat surface includes a first portion contiguous with the front end face, and a second portion that is located farther from the front end face than is the first portion. The metal layer has an end face facing the first portion. The evanescent light generating surface faces the second portion.

摘要翻译： 近场光发生器包括波导管，等离子体激元发生器和金属层。 波导包括具有ev逝光产生表面的芯。 等离子体发生器包括基部和从基部朝向渐逝光产生表面突出的突出部分。 所述突出部具有：前端面，其位于与所述ev逝光生成面平行的方向的端部; 面向渐逝光产生表面的带状平坦表面; 以及连接到平坦表面的两个侧表面。 在突出部分的至少一部分中，两个侧表面之间的距离随着与渐消光产生表面的距离的增加而增加。 平坦表面包括与前端面相邻的第一部分，以及比第一部分更远离前端面的第二部分。 金属层具有面向第一部分的端面。 渐逝光产生表面面向第二部分。

公开(公告)号：US08125857B2

公开(公告)日：2012-02-28

申请号：US12728600

申请日：2010-03-22

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

IPC分类号： G11B11/00

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 propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween and extends in a direction perpendicular to the medium facing surface. The propagation edge is arc-shaped in a cross section parallel to the medium facing surface. The plasmon generator includes a shape changing portion in which a radius of curvature of the propagation edge in the cross section parallel to the medium facing surface continuously decreases with decreasing distance to the medium facing surface.

摘要翻译： 等离子体发生器具有包括传播边缘的外表面，并且具有位于传播边缘的末端并位于面向介质的表面中的近场光产生部分。 传播边缘面向波导芯的ev逝光产生表面，其间具有预定距离，并且在垂直于介质面向表面的方向上延伸。 传播边缘在平行于面向介质的表面的横截面中是弧形的。 等离子体发生器包括形状改变部分，其中平面于介质面向表面的横截面中的传播边缘的曲率半径随着到面向介质的表面的距离的减小而连续地减小。

公开(公告)号：US08077559B1

公开(公告)日：2011-12-13

申请号：US12823491

申请日：2010-06-25

申请人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Katsuki Kurihara

发明人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G02B5/008 ,  G02B27/56 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： An outer surface of a plasmon generator includes: a plasmon exciting part that faces an evanescent light generating surface with a predetermined distance therebetween; and a front end face located in a medium facing surface. The plasmon generator has: first and second sidewall parts that are connected to the plasmon exciting part and increase in distance from each other with increasing distance from the plasmon exciting part; and at least one extended portion connected to an edge of at least one of the first and second sidewall parts opposite from the plasmon exciting part. A magnetic pole has a portion interposed between the first and second sidewall parts. The front end face includes first and second portions lying at ends of the first and second sidewall parts and connected to each other into a V-shape. An end face of the magnetic pole has a portion interposed between the first and second portions of the front end face.

摘要翻译： 等离子体激元发生器的外表面包括：等离子体激元部分，其面对其间具有预定距离的渐逝光产生表面; 以及位于面向介质的表面中的前端面。 等离子体发生器具有：第一和第二侧壁部分，其连接到等离子体激元部分，并且随着离等离子体激元部分的距离增加而彼此间隔距离增加; 以及至少一个连接到与所述等离子体激元部分相对的所述第一和第二侧壁部分中的至少一个的边缘的延伸部分。 磁极具有介于第一和第二侧壁部分之间的部分。 前端面包括位于第一和第二侧壁部分的端部处并且彼此连接成V形的第一和第二部分。 磁极的端面具有插入在前端面的第一和第二部分之间的部分。

公开(公告)号：US20110176398A1

公开(公告)日：2011-07-21

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide through which a light for exciting surface plasmon propagates, a near-field optical device configured to be coupled with the light in a surface plasmon mode and to emit near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole for generating write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface having a contact to the waveguide, and a propagation edge provided on a side opposite to the contact-to-waveguide surface, extending to the near-field-light-generating end surface, and configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the on the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括用于激发表面等离子体激元的光传播的波导，被配置成以表面等离子体激元模式与光耦合的近场光学装置，并且从近场发射近场光 形成相对中间表面的一部分的光产生端面，以及用于从其相对中间表面侧的端部产生写入场的磁极。 近场光学器件包括与波导接触的接触到波导表面，以及设置在与波导表面相对的一侧的传播边缘，延伸到近场光产生端 并且被配置为在由光激发的表面等离子体上传播。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近对面 - 中等表面侧。

公开(公告)号：US08400885B2

公开(公告)日：2013-03-19

申请号：US13097133

申请日：2011-04-29

申请人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

发明人： Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Tsutomu Chou ,  Eiji Komura

IPC分类号： G11B13/08

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

摘要： A thermally-assisted magnetic recording head includes: a pole that generates a writing magnetic field from an end surface that forms a part of an air bearing surface that opposes a magnetic recording medium; a waveguide that propagates light to excite surface plasmon; and a plasmon generator that is provided between the pole and the waveguide and that generates near-field light from a near-field light generating end surface that forms a part of the air bearing surface by coupling with the light in a surface plasmon mode. The plasmon generator includes a flat plate part and a projection part that projects from the flat plate part to the waveguide side and is provided closer to a trailing side than the pole is.

摘要翻译： 一种热辅助磁记录头，包括：从端面产生书写磁场的极，所述磁场形成与磁记录介质相对的空气轴承表面的一部分; 将光传播到激发表面等离子体激元的波导; 以及等离子体发生器，其设置在所述极与所述波导之间，并且通过以表面等离子体模式与所述光结合而从形成所述空气轴承表面的一部分的近场光产生端面产生近场光。 等离子体发生器包括平板部分和突出部分，其从平板部分突出到波导侧并且设置成比杆靠后的后侧。

公开(公告)号：US08391106B2

公开(公告)日：2013-03-05

申请号：US12461157

申请日：2009-08-03

申请人： Koji Shimazawa ,  Yasuhiro Ito ,  Yuji Kakinuma ,  Daisuke Miyauchi ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Yasuhiro Ito ,  Yuji Kakinuma ,  Daisuke Miyauchi ,  Kosuke Tanaka

IPC分类号： G11B11/00

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

摘要： A heat-assisted magnetic recording head includes a slider, and an edge-emitting laser diode that emits polarized light of TM mode. The laser diode is arranged so that its bottom surface faces the top surface of the slider. An electrode of the laser diode closer to the active layer is bonded to a conductive layer of the slider, whereby the laser diode is fixed to the slider. As viewed from above the laser diode, the bottom surface of the electrode of the laser diode includes a first area that a light propagation path of the laser diode overlies, and a second area other than the first area. The top surface of the conductive layer is in contact not with the first area but with the second area of the bottom surface of the electrode.

摘要翻译： 热辅助磁记录头包括滑块和发射TM模的偏振光的边缘发射激光二极管。 激光二极管被布置成使得其底表面面向滑块的顶表面。 更靠近有源层的激光二极管的电极被接合到滑块的导电层，由此激光二极管被固定到滑块。 从激光二极管的上方观察，激光二极管的电极的底面包括激光二极管的光传播路径重叠的第一区域和第一区域以外的第二区域。 导电层的顶表面不与第一区域接触，而是与电极底表面的第二区域接触。

公开(公告)号：US08325567B2

公开(公告)日：2012-12-04

申请号：US12557078

申请日：2009-09-10

申请人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

发明人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.

摘要翻译： 提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。 磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触， 发生器不包括传播边。 因此，磁极端面与产生NFL的端面之间的距离为零。 传播边缘不与磁极接触。 因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。 因此，确保NFL发射点处于传播边缘的终点。

公开(公告)号：US08208349B2

公开(公告)日：2012-06-26

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场 极点从其相对到中等表面侧的端部产生写入场。 近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近相对中的表面侧。

公开(公告)号：US08116173B2

公开(公告)日：2012-02-14

申请号：US12458955

申请日：2009-07-28

申请人： Koji Shimazawa ,  Seiichi Takayama ,  Yasuhiro Ito ,  Daisuke Miyauchi ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Seiichi Takayama ,  Yasuhiro Ito ,  Daisuke Miyauchi ,  Kosuke Tanaka

IPC分类号： G11B11/00

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

摘要： A heat-assisted magnetic recording head includes a slider, and an edge-emitting laser diode fixed to the slider. The slider has a waveguide and an overcoat layer that covers the waveguide. The laser diode has an emitting end face including an emission part for emitting laser light, and a bottom surface. The laser diode is arranged so that the bottom surface faces the top surface of the slider. The waveguide has an incident end face opposed to the emission part of the laser diode. The overcoat layer has an end face that faces the emitting end face of the laser diode. As viewed from above, the end face of the overcoat layer has a convex shape protruding toward the emitting end face of the laser diode so that a part of the end face of the overcoat layer lying over the incident end face of the waveguide comes closest to the emitting end face of the laser diode.

摘要翻译： 热辅助磁记录头包括滑块和固定到滑块的边缘发射激光二极管。 滑块具有覆盖波导的波导和外涂层。 激光二极管具有包括用于发射激光的发射部分和底面的发射端面。 激光二极管被布置成使得底表面面向滑块的顶表面。 波导具有与激光二极管的发射部分相对的入射端面。 外涂层具有面向激光二极管的发射端面的端面。 从上方观察，外涂层的端面具有向激光二极管的发射端面突出的凸形，使得位于波导的入射端面上的外涂层的端面的一部分最接近 激光二极管的发射端面。