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1. 发明授权

US08654617B2 Thermally-assisted magnetic recording head with optically isolating waveguide, head gimbal assembly, head arm assembly, magnetic disk unit, and light transmission unit 有权
标题翻译：热辅助磁记录头，具有光学隔离波导，头万向架组件，头臂组件，磁盘单元和光传输单元
公开(公告)号：US08654617B2
公开(公告)日：2014-02-18
申请号：US13426142
申请日：2012-03-21
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Shinji Hara , Ryo Hosoi , Nobuyuki Mori , Yasutoshi Fujita , Hideki Tanzawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Shinji Hara , Ryo Hosoi , Nobuyuki Mori , Yasutoshi Fujita , Hideki Tanzawa
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G02B6/4208 , G11B5/105 , G11B5/1278 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a laser light source having an emission surface, the emission surface allowing laser light to be emitted therefrom; a waveguide having a core and a cladding, the core allowing the laser light emitted from the laser light source to propagate therethrough, and the cladding surrounding the core; a magnetic pole; and a plasmon generator. Each of the core and the cladding has an end surface facing the emission surface, and the end surface of the cladding suppresses returning of the laser light to the laser light source.
摘要翻译：热辅助磁记录头包括：具有发射表面的激光光源，所述发射表面允许从其发射激光; 具有芯和包层的波导，所述芯允许从激光源发射的激光传播通过其中;以及围绕芯的包层; 磁极和等离子体发生器。芯和包层中的每一个具有面向发射表面的端表面，并且包层的端表面抑制激光返回到激光光源。

2. 发明授权

US08537645B1 Near field light generating element, thermally assisted magnetic head, thermally assisted magnetic head device and thermally assisted magnetic recording/reproducing apparatus 有权
标题翻译：近场光产生元件，热辅助磁头，热辅助磁头装置和热辅助磁记录/重放装置
公开(公告)号：US08537645B1
公开(公告)日：2013-09-17
申请号：US13530829
申请日：2012-06-22
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/6088 , G11B2005/0021
摘要： A near-field light generating element includes a plasmon generator, and the plasmon generator has a base plate and a protrusion. The protrusion protrudes from one side of the base plate, wherein when H represents a height direction of the protrusion from the one side and W represents a width direction perpendicular to the height direction (H), a section taken along a W-H plane is of a rectangular shape whose opposite corners in the height direction (H) are rounded.
摘要翻译：近场光产生元件包括等离子体发生器，等离子体发生器具有基板和突起。突起从基板的一侧突出，其中当H表示突起从一侧的高度方向，W表示与高度方向（H）垂直的宽度方向时，沿WH平面截取的截面为在高度方向（H）上的相对角被倒圆的矩形形状。

3. 发明授权

US08369192B1 Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device 有权
标题翻译：热辅助磁记录头，磁头万向架组件和磁记录装置
公开(公告)号：US08369192B1
公开(公告)日：2013-02-05
申请号：US13298360
申请日：2011-11-17
申请人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Daisuke Miyauchi
发明人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head enables even steeper magnetization reversal between adjacent magnetic domains of a magnetic recording medium and satisfies the demand for high SN ratio and high recording density. The 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 through which light for exciting surface plasmon propagates, and a plasmon generator that couples to the light in a surface plasmon mode. The plasmon generator has a plane part and a projection part, the pole has a projection part opposing surface that opposes the projection part, and the distance between the projection part opposing surface and the projection part is 10-40 nm.
摘要翻译：热辅助磁记录头使磁记录介质的相邻磁畴之间的磁化反转能够更高，并满足高SN比和高记录密度的要求。热辅助磁记录头包括从形成与磁记录介质相对的空气轴承表面的一部分的端面产生书写磁场的磁极，用于激发表面等离子体激元的光传播的波导和等离子体激元发生器以表面等离子体模式耦合到光。等离子体发生器具有平面部分和突出部分，所述极具有与突出部分相对的突出部分相对表面，并且突出部分相对表面和突出部分之间的距离为10-40nm。

4. 发明授权

US08341825B2 Method for manufacturing a thermally-assisted magnetic head 有权
标题翻译：热辅助磁头制造方法
公开(公告)号：US08341825B2
公开(公告)日：2013-01-01
申请号：US12947091
申请日：2010-11-16
申请人： Shinji Hara , Koji Shimazawa , Eiji Komura , Tsutomu Chou , Seiichi Takayama
发明人： Shinji Hara , Koji Shimazawa , Eiji Komura , Tsutomu Chou , Seiichi Takayama
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/314 , G02B6/4202 , G11B5/105 , G11B5/3116 , G11B5/6088 , G11B2005/0021 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A thermally-assisted magnetic head includes a slider including an air bearing surface (ABS) and a waveguide with a core that extends from a light entering surface to the ABS, and a laser diode (LD) unit attached to the light entering surface. The LD unit faces the light entering surface, and a photo detector faces the ABS. A polarizer that only transmits light having a polarization component orthogonal to a polarization direction of linearly polarized laser light is disposed between the ABS and the photo detector. An LD of the LD unit is activated, and the linearly polarized laser light enters the core from the light entering surface. Light radiated from the ABS enters the polarizer, and an alignment of the slider and the LD unit is performed while the photo detector detects the light transmitted through the polarizer.
摘要翻译：热辅助磁头包括滑动件，其包括空气轴承表面（ABS）和具有从光进入表面延伸到ABS的芯的波导和附接到光进入表面的激光二极管（LD）单元。 LD单元面向光入射表面，光检测器面向ABS。只有透射具有与线偏振激光的偏振方向正交的偏振分量的光的偏振器设置在ABS和光电检测器之间。 LD单元的LD被激活，并且线偏振激光从光入射表面进入芯。从ABS辐射的光进入偏振器，并且在光电检测器检测透过偏振器的光时，执行滑块和LD单元的对准。

5. 发明申请

US20110228420A1 HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR 有权
标题翻译：热辅助磁记录头，包括等离子发生器
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。

6. 发明申请

US20110026377A1 Thermally-Assisted Magnetic Recording Head Comprising Light Source with Photonic-Band Layer 有权
标题翻译：包含光子带光层的热辅助磁记录头
公开(公告)号：US20110026377A1
公开(公告)日：2011-02-03
申请号：US12512249
申请日：2009-07-30
申请人： Koji Shimazawa , Seiichi Takayama , Tsutomu Chou , Eiji Komura
发明人： Koji Shimazawa , Seiichi Takayama , Tsutomu Chou , Eiji Komura
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head is provided, in which a light source having sufficiently high output power for performing thermal-assist is disposed in the element-integration surface of the substrate to achieve improved mass-productivity. The head includes: a light source having a multilayered structure including a photonic-band layer and having a light-emitting surface opposed to the element-integration surface; a diffraction optical element that converges the emitted light; a light-path changer that changes the direction of the converged light; a waveguide that propagates the direction-changed light toward the opposed-to-medium surface; and a magnetic pole that generates write field. The surface-emitting type light source includes a photonic-band layer having a periodic structure in which a light from an active region resonates, and thus emits laser light on a quite different principle from a VCSEL. Therefore, the light source can be disposed in the element-integration surface, even though having sufficiently high output power.
摘要翻译：提供了一种热辅助磁记录头，其中具有足够高输出功率的用于进行热辅助的光源设置在基板的元件集成表面中，以实现提高的批量生产率。头包括：具有包括光子带层并且具有与元件一体化表面相对的发光表面的多层结构的光源; 会聚发射光的衍射光学元件; 改变会聚光的方向的光路改变器; 波导，其将所述方向改变的光传播到所述相对中介表面; 以及产生写入场的磁极。表面发射型光源包括具有周期性结构的光子带层，其中来自有源区的光谐振，从而以与VCSEL完全不同的原理发射激光。因此，即使具有足够高的输出功率，也可以将光源配置在元件一体化表面。

7. 发明授权

US08547805B1 Thermally-assisted magnetic recording head having temperature sensor embedded on dielectric waveguide 有权
标题翻译：具有嵌入在介质波导上的温度传感器的热辅助磁记录头
公开(公告)号：US08547805B1
公开(公告)日：2013-10-01
申请号：US13432245
申请日：2012-03-28
申请人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka , Ryo Hosoi
发明人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/607 , G11B2005/0021
摘要： A thermal assisted magnetic recording head includes a dielectric waveguide that is configured to propagate propagation light a metal waveguide that is provided facing the dielectric waveguide and that couples to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, thereby generating and propagating surface plasmon, a near-field light generator that is exposed on an air bearing surface facing a magnetic recording medium either at an end part of the metal waveguide or at a position facing the end part of the metal waveguide, and that generates near-field light from the surface plasmon, a magnetic pole for magnetic recording that is exposed on the air bearing surface, and a temperature sensor that is arranged inside the dielectric waveguide.
摘要翻译：热辅助磁记录头包括电介质波导，其被配置为传播传播光，所述介质波导设置成面对介质波导并且以表面等离子体模式耦合到传播通过介质波导的传播光，从而产生和传播表面等离子体激元，近场光发生器，其在面向金属波导的端部的面向磁记录介质的空气轴承表面上或面对金属波导的端部的位置处暴露，并且产生近场光从表面等离子体激元，暴露在空气轴承表面上的用于磁记录的磁极，以及布置在电介质波导内部的温度传感器。

8. 发明授权

US08223596B2 Thermally-assisted magnetic recording head with plane-emission type light source 有权
标题翻译：具有平面发射型光源的热辅助磁记录头
公开(公告)号：US08223596B2
公开(公告)日：2012-07-17
申请号：US12581385
申请日：2009-10-19
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a surface-emitting type light source for emitting substantially collimated beam, a first diffraction optical element for focusing the substantially collimated beam emitted from the surface-emitting type light source, a second diffraction optical element for collimating the light beam focused by the first diffraction optical element, a waveguide integrally formed with the second diffraction optical element and made of the material as that of second diffraction optical element, the light beam collimated by the second diffraction optical element being incident to the waveguide, an optical-path direction conversion element for converting a direction of an optical path of the incident light beam to a propagation direction of the waveguide, the propagation direction being toward an opposed-to-medium surface, and a magnetic pole for generating write field from its end face on the opposed-to-medium surface side.
摘要翻译：热辅助磁记录头包括用于发射基本上准直的光束的表面发射型光源，用于聚焦从表面发射型光源发射的基本上准直的光束的第一衍射光学元件，用于准直由第一衍射光学元件聚焦的光束，与第二衍射光学元件整体形成并由第二衍射光学元件的材料制成的波导，由第二衍射光学元件准直的光束入射到波导，光路方向转换元件，用于将入射光束的光路的方向转换为波导的传播方向，传播方向朝向相对中间的表面;以及用于从其产生写入场的磁极在相对中的表面侧上的端面。

9. 发明申请

US20120120781A1 Thermally-Assisted Head Including Surface-Plasmon Resonant Optical System 有权
标题翻译：热辅助头包括表面等离子体共振光学系统
公开(公告)号：US20120120781A1
公开(公告)日：2012-05-17
申请号：US12946196
申请日：2010-11-15
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B13/08 , F21V8/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/105 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： Provided is a surface plasmon resonating optical system emitting near-field light (NF-light) with a higher light density. The system comprises: a waveguide through which a light for exciting surface plasmon propagates; a plasmon generator that couples with the light in a surface plasmon mode and emits NF-light from its NF-light generating end surface; and a resonator mirror that reflects the excited surface plasmon, provided on the side of the plasmon generator opposite to the NF-light generating end surface. In the system, the excited surface plasmon can be amplified by using a resonator structure while reducing the length of the plasmon generator to reduce absorption of surface plasmon and prevent overheating of the plasmon generator.
摘要翻译：提供了具有较高光密度的发射近场光（NF-光）的表面等离子体共振光学系统。该系统包括：用于激发表面等离子体激元的光传播的波导; 等离子体发生器，其以表面等离子体模式耦合光并从其NF光产生端表面发射NF光; 以及反射激发的表面等离子体的谐振镜，设置在等离子体发生器的与NF发光端面相对的一侧。在该系统中，可以通过使用谐振器结构来放大激发的表面等离子体激元，同时减少等离子体发生器的长度以减少表面等离子体的吸收并防止等离子体发生器的过热。

10. 发明授权

US08427927B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08427927B1
公开(公告)日：2013-04-23
申请号：US13370982
申请日：2012-02-10
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide allowing a transverse-electric (TE) wave oscillating in a cross-track direction to propagate toward an air bearing surface; and a plasmon generator having a tip portion near the air bearing surface, the tip portion being provided to overlap, in a down-track direction, with both the magnetic pole and the waveguide, and having a quadrangular cross-section substantially parallel to the air bearing surface.
摘要翻译：热辅助磁记录头包括：磁极; 允许在横向轨道方向上振荡的横向电（TE）波向空气轴承表面传播的波导; 以及等离子体发生器，其具有靠近所述空气支承表面的尖端部分，所述尖端部分被设置为沿着磁道和所述波导两者的向下轨道方向重叠，并且具有基本上平行于所述空气的四边形横截面承载面。

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