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31. 发明申请

US20110235478A1 WAVE GUIDE THAT ATTENUATES EVANESCENT LIGHT OF HIGHER ORDER TM MODE 有权
标题翻译：浪潮导致更高级TM模式的衰减
公开(公告)号：US20110235478A1
公开(公告)日：2011-09-29
申请号：US12729560
申请日：2010-03-23
申请人： Eiji KOMURA , Shinji Hara , Seiichi Takayama , Koji Shimazawa
发明人： Eiji KOMURA , Shinji Hara , Seiichi Takayama , Koji Shimazawa
IPC分类号： G11B11/00 , G02B6/26
CPC分类号： G11B5/314 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： A waveguide has a core through which laser light can propagate in a TM mode, that has a rectangular cross section perpendicular to a propagative direction of the laser light, and through which the laser light can propagate in a fundamental mode in which only one portion exists on the cross section of the core where a light intensity of the laser light becomes maximal, and a higher order mode in which two or more portions exist where the light intensity becomes maximal, a clad surrounding the core, and a light absorbing element in the clad, and wherein a distance between the light absorbing element and the core is shorter than a penetration length of evanescent light in the higher order mode, but is longer than a penetration length of evanescent light in the fundamental mode.
摘要翻译：波导具有核，激光可以以TM模式传播，其具有与激光的传播方向垂直的矩形横截面，激光可以以仅存在一个部分的基本模式传播在激光的光强度变得最大的核心的横截面上，以及存在光强度变得最大的两个以上部分的高阶模式，围绕芯的包层，以及光吸收元件并且其中所述光吸收元件和所述芯之间的距离比所述高阶模式中的渐逝光的穿透长度短，但是比所述基模中的渐逝光的穿透长度更长。

32. 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。

33. 发明授权

US08325568B2 Thermally-assisted magnetic recording head comprising characteristic clads 有权
标题翻译：包括特征包层的热辅助磁记录头
公开(公告)号：US08325568B2
公开(公告)日：2012-12-04
申请号：US12848422
申请日：2010-08-02
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
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 with improved light density of near-field light (NF-light) with which a medium is irradiated. The head comprises: a magnetic pole; a waveguide for propagating light for exciting surface plasmon; a surface plasmon generator provided between the magnetic pole and the waveguide, coupled with the light in a surface plasmon mode, and emitting NF-light; and a clad portion provided at least between the waveguide and the surface plasmon generator and comprising a transition region in which a refractive index decreases along a direction from the waveguide toward the magnetic pole. The provision of the clad portion including the transition region enables improvement of the light density of NF-light due to the convergence of surface plasmon excited in the surface plasmon generator to predetermined locations, while avoiding the problem of temperature rise due to reduction of the volume of surface plasmon generator.
摘要翻译：提供了一种具有改善的照射介质的近场光（NF光）的光密度的热辅助磁记录头。磁头包括：磁极; 用于传播激发表面等离子体激元的光的波导; 设置在磁极和波导之间的表面等离子体发生器，与表面等离子体模式的光耦合，并发射NF光; 以及至少在波导管和表面等离子体激元发生器之间设置的包层部分，并且包括其中折射率沿着从波导到磁极的方向减小的过渡区域。提供包括过渡区域的包层部分能够改善由于表面等离子体发生器中激发的表面等离子激元的会聚而导致的NF光的光密度到预定位置，同时避免了由于体积的减小导致的温度上升的问题的表面等离子体发生器。

34. 发明授权

US08325566B2 Thermally-assisted magnetic recording head having a light source at least inclined from an opposed-to-medium surface 有权
标题翻译：热辅助磁记录头具有至少相对中间表面倾斜的光源
公开(公告)号：US08325566B2
公开(公告)日：2012-12-04
申请号：US12407420
申请日：2009-03-19
申请人： Koji Shimazawa , Eiji Komura
发明人： Koji Shimazawa , Eiji Komura
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 is provided, in which a light source with a sufficient power is disposed in the element-integration surface to improve mass-productivity. The head comprises, in an element-integration surface of a substrate: a light source; a waveguide for propagating light from the light source; and a magnetic pole for generating write field. Further, the edge along optical axis of the light source is set to be parallel with or inclined from the edge on the opposed-to-medium surface side of the element-integration surface. In the head, since the light source is disposed in the element-integration surface, the construction of the optical system can be completed in the stage of a wafer process. This construction can be relatively facilitated and simplified; thus, mass-productivity in the head manufacturing can be improved. Further, a light source with a sufficient power (cavity length) can be disposed in the element-integration surface.
摘要翻译：提供一种热辅助磁记录头，其中具有足够功率的光源设置在元件整合表面中以提高批量生产率。头部包括在基板的元件集成表面中：光源; 用于从光源传播光的波导; 以及用于产生写入场的磁极。此外，沿着光源的光轴的边缘被设定为与元件整合表面的相对中介表面侧上的边缘平行或倾斜。在磁头中，由于光源设置在元件集成表面中，所以可以在晶片工艺的阶段完成光学系统的结构。这种结构可以相对便利和简化; 因此，可以提高头部制造中的批量生产率。此外，具有足够功率（空腔长度）的光源可以设置在元件集成表面中。

35. 发明授权

US08223597B2 Thermally assisted head having reflection mirror for propagating light 有权
标题翻译：热辅助头具有用于传播光的反射镜
公开(公告)号：US08223597B2
公开(公告)日：2012-07-17
申请号：US12820290
申请日：2010-06-22
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A magnetic head includes a magnetic head slider; and a laser diode that is positioned on a surface of a side opposite to a substrate of the magnetic head slider and that generates laser light; the magnetic head slider including: a core through which the laser light emitted from the laser diode propagates as propagating light; a cladding that covers the core and that has a refractive index that is smaller than that of the core; a near field light generating means that generates near field light from the propagating light on an air bearing surface; and a main pole for recording that is disposed adjacent to the near field light generating means and of which an edge part is positioned on the air bearing surface. The core includes a reflection layer and a seed layer, the reflection layer has a refractive index smaller than that of the core, and has a reflection surface on which laser light emitted from the laser diode reflects so as to enter the core as the propagating light, and the seed layer is positioned on a back surface of the reflection surface of the reflection layer and suppresses plasmon generation on the reflection surface.
摘要翻译：磁头包括磁头滑块; 以及激光二极管，其位于与磁头滑块的基板相反的一侧的表面上，并产生激光; 磁头滑块包括：从激光二极管发射的激光通过其传播的传播光; 覆盖芯并且折射率小于芯的折射率的包层; 近场光产生装置，其从空气轴承表面上的传播光产生近场光; 以及与近场光产生装置相邻设置并且边缘部分位于空气支承表面上的用于记录的主极。芯包括反射层和种子层，反射层的折射率小于芯的折射率，并且具有反射表面，激光二极管发射的激光以其反射的方式进入芯，作为传播光并且种子层位于反射层的反射面的背面，并抑制反射面上的等离子体发生。

36. 发明申请

US20120117791A1 METHOD FOR MANUFACTURING A THERMALLY-ASSISTED MAGNETIC HEAD 有权
标题翻译：制造热辅助磁头的方法
公开(公告)号：US20120117791A1
公开(公告)日：2012-05-17
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
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： In a method for manufacturing a thermally-assisted magnetic head that includes a slider and an LD unit, the slider including an air bearing surface (ABS) that faces a recording medium and including a waveguide with a core for light propagation that extends from a light entering surface, which is different from the ABS, to the ABS, the LD unit being attached to the light entering surface of the slider, and the thermally-assisted magnetic head performing magnetic recording while heating the recording medium with near-field light that is excited from linearly polarized laser light, the LD unit is disposed in a position facing the light entering surface of the slider, a photo detector is disposed in a position facing the ABS of the slider, and a polarizer transmitting only light having a polarization component that is orthogonal to a polarization direction of the 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 is enabled to enter into the core from the light entering surface of the slider. Light radiated from the ABS is enabled to enter into the polarizer, and an alignment of the slider and the LD unit is performed while the photo detector detects light that is transmitted through the polarizer.
摘要翻译：在制造包括滑块和LD单元的热辅助磁头的方法中，滑块包括面向记录介质的空气轴承表面（ABS），该空气轴承表面包括具有从光线延伸的光传播用核心的波导进入与ABS不同的表面，将LD单元附着到滑块的光进入表面，并且热辅助磁头在用近场光加热记录介质的同时进行磁记录从线偏振激光激发，LD单元被设置在面向滑块的光进入表面的位置，光电检测器设置在面向滑块的ABS的位置，偏振器仅透射具有偏振分量的光，与线偏振激光的偏振方向垂直的方式设置在ABS和光电检测器之间。 LD单元的LD被激活，并且线偏振激光能够从滑块的光进入表面进入芯中。从ABS辐射的光能够进入偏振器，并且当光电检测器检测到透射通过偏振器的光时，执行滑块和LD单元的对准。

37. 发明授权

US08169861B1 Thermally-assisted magnetic recording head comprising plasmon generator 有权
标题翻译：包括等离子体发生器的热辅助磁记录头
公开(公告)号：US08169861B1
公开(公告)日：2012-05-01
申请号：US12946103
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： G11B11/00
CPC分类号： G11B5/314 , G02B6/1226 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head in which NF-light with sufficiently high light density can be applied to a medium while a write-field generating point and a near-field light (NF-light) generating point are close to each other. The head comprises a plasmon generator provided between a magnetic pole and a waveguide and configured to be coupled with light propagating through the waveguide in a surface plasmon mode to emit NF-light. The plasmon generator comprises: a plasmon propagating part comprising a propagation edge for propagating surface plasmon excited by the light; and a light penetration suppressing part with an extinction coefficient greater than the plasmon propagating part. The light penetration suppressing part is in surface-contact with a surface portion of the plasmon propagating part excluding the propagation edge, and the magnetic pole is in surface-contact with the light penetration suppressing part. This configuration can avoid significant reduction in light use efficiency of an optical system generating NF-light due to partial absorption of electromagnetic field (light) into the magnetic pole.
摘要翻译：本发明提供一种热辅助磁记录头，其中写入场产生点和近场光（NF-光）产生点彼此靠近的情况下，能够将具有足够高的光密度的NF光施加到介质上。头部包括设置在磁极和波导之间的等离子体激元发生器，其被配置为以表面等离子体模式传播通过波导的光耦合，以发射NF光。等离子体发生器包括：等离子体激元传播部分，包括用于传播由光激发的表面等离子体激元的传播边缘; 以及具有大于等离子体激元传播部分的消光系数的光穿透抑制部分。透光抑制部与除了传播边缘之外的等离子体激元传播部分的表面部分表面接触，并且磁极与透光抑制部分表面接触。该结构可以避免由于电磁场（光）向磁极的部分吸收而产生NF光的光学系统的光使用效率的显着降低。

38. 发明授权

US08111591B2 Heat-assisted magnetic recording head having laser diode overlaping two recording wiring layers 有权
标题翻译：具有激光二极管的热辅助磁记录头与两个记录布线层重叠
公开(公告)号：US08111591B2
公开(公告)日：2012-02-07
申请号：US12458954
申请日：2009-07-28
申请人： Koji Shimazawa , Tomohito Mizuno , Eiji Komura
发明人： Koji Shimazawa , Tomohito Mizuno , Eiji Komura
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 includes: a substrate; and an MR element, two reproduction wiring layers, a coil, two recording wiring layers, a magnetic pole, a near-field light generating element, and a waveguide that are stacked above the top surface of the substrate. The two reproduction wiring layers supply a sense current to the MR element. The two recording wiring layers supply a coil current to the coil, 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. As viewed from above, the laser diode does not overlap the two reproduction wiring layers but overlaps at least one of the two recording wiring layers.
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。滑块包括：基板; 以及层叠在基板的上表面上方的MR元件，两个再现布线层，线圈，两个记录布线层，磁极，近场光产生元件和波导。两个再现布线层向MR元件提供感测电流。两个记录布线层向线圈提供线圈电流。激光二极管具有包括用于发射激光的发射部分的发射端面和底表面。激光二极管被布置成使得底表面面向滑块。如上所述，激光二极管不与两个再现布线层重叠，而是与两个记录布线层中的至少一个重叠。

39. 发明申请

US20110205660A1 Spot size converter and thermal assist magnetic recording head therewith 有权
标题翻译：点尺寸转换器和热辅助磁记录头
公开(公告)号：US20110205660A1
公开(公告)日：2011-08-25
申请号：US12659094
申请日：2010-02-25
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B5/02 , G02B6/26 , G02B6/036
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/1228 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A spot size converter according to the present invention is capable of shortening the waveguide length in the spot size converter and of promoting a size reduction of the optical waveguide itself because two cores having a taper portion are combined and those tapering angles are mutually aligned. Furthermore, spot size conversion efficiency is favorable even in a small size.
摘要翻译：根据本发明的点尺寸转换器能够缩短光斑尺寸转换器中的波导长度并且促进光波导本身的尺寸减小，因为具有锥形部分的两个芯体组合并且这些渐缩角度相互对准。此外，即使在小尺寸的情况下，光斑尺寸转换效率也是有利的。

40. 发明申请

US20110090587A1 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：US20110090587A1
公开(公告)日：2011-04-21
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： G11B5/02
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;以及磁极，用于从其产生写入场在相对中的表面侧上的端面。

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