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：US20110228419A1

公开(公告)日：2011-09-22

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： G11B5/02

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：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：US20120275280A1

公开(公告)日：2012-11-01

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，其设置在所述极和所述波导之间，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，并且设置成比杆极靠近尾部。

公开(公告)号：US20110228420A1

公开(公告)日：2011-09-22

申请号：US12728890

申请日：2010-03-22

申请人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

发明人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

IPC分类号： G11B5/02

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 plasmon exciting part, and has a near-field light generating part located in a medium facing surface. The plasmon exciting part faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween. The outer surface of the plasmon generator further includes first and second inclined surfaces that are each connected to the plasmon exciting part. The first and second inclined surfaces increase in distance from each other with increasing distance from the plasmon exciting part. The plasmon generator includes a shape changing portion where the angle of inclination of each of the first and second inclined surfaces with respect to the evanescent light generating surface increases continuously with decreasing distance to the medium facing surface.

摘要翻译： 等离子体发生器具有包括等离子体激元部分的外表面，并且具有位于介质面对表面中的近场光产生部分。 等离子激元激发部分面对波导芯的渐逝光产生表面，其间具有预定的距离。 等离子体发生器的外表面还包括各自连接到等离子体激元部分的第一和第二倾斜表面。 第一和第二倾斜表面随距离等离激子激发部分的距离增加而彼此间距离增加。 等离子体发生器包括形状改变部分，其中第一和第二倾斜表面中的每一个相对于ev逝光产生表面的倾斜角度随着到介质面向表面的距离的减小而连续增加。

公开(公告)号：US08351308B2

公开(公告)日：2013-01-08

申请号：US12892540

申请日：2010-09-28

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

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

IPC分类号： G11B11/00

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

摘要： A thermally assisted magnetic head includes a magnetic pole that generates a writing magnetic field from an air bearing surface (ABS); a waveguide through which light propagates; and a plasmon generator generating near-field light from a near-field light generating end surface by coupling the light thereto in a surface plasmon mode. The magnetic pole includes a convex part protruding in a substantially V-shape along a light propagation direction of the waveguide. The plasmon generator includes a substantially V-shaped part contacting the convex part, and as seen from a side of the ABS, a thickness of the plasmon generator in a direction perpendicular to convex part contacting sides gradually increases from an end in a direction away from the waveguide, the convex part contacting sides being linear sides that form the substantially V-shaped part of the plasmon generator and contacting the convex part.

摘要翻译： 热辅助磁头包括从空气轴承表面（ABS）产生书写磁场的磁极; 光传播的波导; 以及等离子体发生器，其通过以表面等离子体激发模式将光耦合到其上，从近场光产生端面产生近场光。 磁极包括沿波导的光传播方向大致V形突出的凸部。 等离子体发生器包括接触凸部的大致V形部分，并且从ABS的侧面看，等离子体发生器在与凸部接触的方向垂直的方向上的厚度从远离方向的端部逐渐增加 所述波导，所述凸部接触侧为直线侧，其形成所述等离子体发生器的大致V形部分并接触所述凸部。

公开(公告)号：US20120075967A1

公开(公告)日：2012-03-29

申请号：US12892540

申请日：2010-09-28

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

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

IPC分类号： G11B11/24

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

摘要： A thermally assisted magnetic head includes a magnetic pole that generates a writing magnetic field from an air bearing surface (ABS); a waveguide through which light propagates; and a plasmon generator generating near-field light from a near-field light generating end surface by coupling the light thereto in a surface plasmon mode. The magnetic pole includes a convex part protruding in a substantially V-shape along a light propagation direction of the waveguide. The plasmon generator includes a substantially V-shaped part contacting the convex part, and as seen from a side of the ABS, a thickness of the plasmon generator in a direction perpendicular to convex part contacting sides gradually increases from an end in a direction away from the waveguide, the convex part contacting sides being linear sides that form the substantially V-shaped part of the plasmon generator and contacting the convex part.

摘要翻译： 热辅助磁头包括从空气轴承表面（ABS）产生书写磁场的磁极; 光传播的波导; 以及等离子体发生器，其通过以表面等离子体激发模式将光耦合到其上，从近场光产生端面产生近场光。 磁极包括沿波导的光传播方向大致V形突出的凸部。 等离子体发生器包括接触凸部的大致V形部分，并且从ABS的侧面看，等离子体发生器在与凸部接触的方向垂直的方向上的厚度从远离方向的端部逐渐增加 所述波导，所述凸部接触侧为直线侧，其形成所述等离子体发生器的大致V形部分并接触所述凸部。

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：US08125858B2

公开(公告)日：2012-02-28

申请号：US12728890

申请日：2010-03-22

申请人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

发明人： Shinji Hara ,  Tsutomu Chou ,  Kosuke Tanaka ,  Eiji Komura ,  Koji Shimazawa ,  Daisuke Miyauchi ,  Susumu Aoki ,  Takeshi Tsutsumi

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 plasmon exciting part, and has a near-field light generating part located in a medium facing surface. The plasmon exciting part faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween. The outer surface of the plasmon generator further includes first and second inclined surfaces that are each connected to the plasmon exciting part. The first and second inclined surfaces increase in distance from each other with increasing distance from the plasmon exciting part. The plasmon generator includes a shape changing portion where the angle of inclination of each of the first and second inclined surfaces with respect to the evanescent light generating surface increases continuously with decreasing distance to the medium facing surface.

摘要翻译： 等离子体发生器具有包括等离子体激元部分的外表面，并且具有位于介质面对表面中的近场光产生部分。 等离子激元激发部分面对波导芯的渐逝光产生表面，其间具有预定的距离。 等离子体发生器的外表面还包括各自连接到等离子体激元部分的第一和第二倾斜表面。 第一和第二倾斜表面随距离等离激子激发部分的距离增加而彼此间距离增加。 等离子体发生器包括形状改变部分，其中第一和第二倾斜表面中的每一个相对于ev逝光产生表面的倾斜角度随着到介质面向表面的距离的减小而连续增加。

公开(公告)号：US08089831B2

公开(公告)日：2012-01-03

申请号：US12710129

申请日：2010-02-22

申请人： Tsutomu Chou ,  Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka ,  Daisuke Miyauchi

发明人： Tsutomu Chou ,  Eiji Komura ,  Koji Shimazawa ,  Kosuke Tanaka ,  Daisuke Miyauchi

IPC分类号： G11B11/00

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

摘要： A plasmon generator has an outer surface including a surface plasmon exciting surface, and has a near-field light generating part located in a medium facing surface. The surface plasmon exciting surface is a flat surface that faces an evanescent light generating surface of a waveguide with a predetermined distance therebetween. The surface plasmon exciting surface includes a width changing portion. The width of the width changing portion in a direction parallel to the medium facing surface and the evanescent light generating surface decreases with decreasing distance to the medium facing surface. A magnetic pole is located at such a position that the plasmon generator is interposed between the magnetic pole and the waveguide. The outer surface of the plasmon generator includes a pole contact surface that is in contact with the magnetic pole.

摘要翻译： 等离子体发生器具有包括表面等离子体激元表面的外表面，并且具有位于介质面对表面中的近场光产生部。 表面等离子体激元表面是面对波导的ev逝光产生表面的平坦表面，其间具有预定的距离。 表面等离子体激元表面包括宽度改变部分。 宽度改变部分在与面向介质的表面和ev逝光产生表面平行的方向上的宽度随着与面向介质的表面的距离的减小而减小。 磁极位于这样的位置，等离子体发生器插入在磁极和波导之间。 等离子体发生器的外表面包括与磁极接触的极接触表面。