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：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：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：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：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：US08077558B1

公开(公告)日：2011-12-13

申请号：US12785897

申请日：2010-05-24

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

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

IPC分类号： G11B11/00

CPC分类号： G11B5/3163 ,  B82Y20/00 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/1384 ,  G11B7/1387 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A plasmon generator has an outer surface including a plasmon exciting part that faces an evanescent light generating surface of a waveguide. The outer surface further includes first and second inclined surfaces that increase in distance from each other with increasing distance from the plasmon exciting part, and a front end face. The front end face has first and second portions that are connected to each other into a V-shape. The first portion includes a first side lying at an end of the first inclined surface. The second portion includes a second side lying at an end of the second inclined surface. An angle formed between a lower part of the first side and a lower part of the second side is smaller than that formed between an upper part of the first side and an upper part of the second side.

摘要翻译： 等离子体发生器具有外表面，其包括面向波导的ev逝光产生表面的等离子体激元部分。 外表面还包括第一和第二倾斜表面，该第一和第二倾斜表面随距距等离子体激元部分的距离增加而彼此间隔开，并且前端面。 前端面具有彼此连接成V形的第一和第二部分。 第一部分包括位于第一倾斜表面的端部的第一侧。 第二部分包括位于第二倾斜表面的端部的第二侧。 形成在第一侧的下部和第二侧的下部之间的角度小于在第一侧的上部和第二侧的上部之间形成的角度。

公开(公告)号：US20110058272A1

公开(公告)日：2011-03-10

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： G11B5/02

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：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。