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41. 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。

42. 发明授权

US08243388B2 Heat-assisted magnetic head constituted of slider and light source unit, and manufacturing method of the head 有权
标题翻译：由滑块和光源单元构成的热辅助磁头，以及头部的制造方法
公开(公告)号：US08243388B2
公开(公告)日：2012-08-14
申请号：US12107216
申请日：2008-04-22
申请人： Koji Shimazawa , Yasuhiro Ito , Eiji Komura , Seiichi Takayama , Kosuke Tanaka
发明人： Koji Shimazawa , Yasuhiro Ito , Eiji Komura , Seiichi Takayama , Kosuke Tanaka
IPC分类号： G11B5/127 , G11B11/00
CPC分类号： G11B5/314 , G11B5/102 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a heat-assisted magnetic recording head constituted of a light source unit and a slider, which can be easily joined to each other with sufficiently high accuracy of joining position. The slider comprises a head part including a waveguide having an incident center on its end. The surface including an emission center of the light source is protruded from a joining surface of the unit substrate. And a step is provided on an end surface of the head part. The protruded portion of a lower surface of the light source has a surface contact with a wall surface of the step. Further, the distance between the wall surface of the step and the incident center of the waveguide is set to be equal to the distance between the emission center of the light source and the protruded portion of the lower surface of the light source.
摘要翻译：提供一种由光源单元和滑块构成的热辅助磁记录头，其可以以足够高的接合位置精度彼此容易地接合。滑块包括头部，其包括在其端部具有入射中心的波导。包括光源的发射中心的表面从单元基板的接合表面突出。并且在头部的端面上设置有台阶。光源的下表面的突出部分与台阶的壁面具有表面接触。此外，台阶壁面与波导入射中心之间的距离被设定为等于光源的发射中心与光源的下表面的突出部分之间的距离。

43. 发明授权

US08116034B2 Thermally assisted magnetic head having main pole arranged between near-field light-generating portions and manufacturing method of same 有权
标题翻译：具有设置在近场发光部之间的主极的热辅助磁头及其制造方法
公开(公告)号：US08116034B2
公开(公告)日：2012-02-14
申请号：US12204452
申请日：2008-09-04
申请人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
发明人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B2005/0021
摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
摘要翻译：当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端被非常靠近在一起，并且可以执行高密度记录。

44. 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。

45. 发明申请

US20110026378A1 Heat-assisted magnetic recording head with laser diode 有权
标题翻译：带激光二极管的热辅助磁记录头
公开(公告)号：US20110026378A1
公开(公告)日：2011-02-03
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。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。

46. 发明申请

US20100172220A1 Near-Field Light Generating Element Comprising Surface Plasmon Antenna And Waveguide With Groove 有权
标题翻译：包括表面等离子体天线和波导的近场光产生元件
公开(公告)号：US20100172220A1
公开(公告)日：2010-07-08
申请号：US12349956
申请日：2009-01-07
申请人： Eiji Komura , Koji Shimazawa
发明人： Eiji Komura , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y10/00 , G11B5/4866 , G11B5/6088 , G11B5/743 , G11B2005/001 , G11B2005/0021
摘要： Provided is a near-field light generating element in which as much amount as possible of waveguide light can be coupled with a plasmon antenna. The element comprises a light waveguide and a plasmon antenna comprising a surface or edge for propagating surface plasmon excited by waveguide light, extending to a near-field light generating end. A groove is formed in a waveguide side surface. And at least a portion of the surface or edge is embedded in the groove or located directly above the groove, being opposed to a wall or bottom surface of the groove with a predetermined distance, so as for waveguide light to be coupled with the plasmon antenna in surface plasmon mode. This configuration enables the surface or edge to be located at the position in which the surface or edge can be coupled with more amount of light, thereby to improve the light use efficiency.
摘要翻译：提供了一种近场光产生元件，其中尽可能多的波导光可以与等离子体激元天线耦合。元件包括光波导和等离子体激元，其包括用于传播由波导光激发的表面等离子体激元的表面或边缘，延伸到近场光产生端。在波导侧面形成有槽。并且所述表面或边缘的至少一部分嵌入在所述凹槽中或者位于所述凹槽的正上方，与所述凹槽的壁或底表面相隔预定距离，以便与所述等离子体天线耦合的波导光在表面等离子体激元模式。这种构造使得表面或边缘能够位于表面或边缘可以与更多量的光耦合的位置，从而提高光的使用效率。

47. 发明申请

US20100149930A1 NEAR-FIELD LIGHT GENERATING ELEMENT COMPRISING SURFACE PLASMON ANTENNA WITH SURFACE OR EDGE OPPOSED TO WAVEGUIDE 有权
标题翻译：包含表面等离子体天线的近场光产生元件与表面或边缘相对的波导
公开(公告)号：US20100149930A1
公开(公告)日：2010-06-17
申请号：US12335943
申请日：2008-12-16
申请人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
发明人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/4866 , G11B5/6088 , G11B7/1387 , G11B2005/001 , G11B2005/0021
摘要： Provided is a near-field light generating element in which reduced is the propagation loss of excited surface plasmon that propagates to the near-field light generating end. The element comprises: a waveguide through which light for exciting surface plasmon propagates; and a plasmon antenna comprising a near-field light generating end and a propagation surface or edge. The propagation surface or edge extends to the near-field light generating end, and causes surface plasmon excited by the light to propagate thereon. Further, a portion of the side surface on the near-field light generating end side is opposed to the propagation surface or edge with a predetermined distance so as for the light to be coupled with the plasmon antenna in a surface plasmon mode. In this configuration, surface plasmon can propagates without significantly changing its wavenumber, which leads to a less propagation loss, and to an improved light use efficiency.
摘要翻译：提供了一种近场光产生元件，其中传播到近场光产生端的被激发的表面等离子体激元的传播损耗减小。该元件包括：用于激发表面等离子体激元的光传播的波导; 以及包括近场光产生端和传播表面或边缘的等离子体激元天线。传播表面或边缘延伸到近场光产生端，并且使由光激发的表面等离子体激发在其上。此外，近场光产生端侧的侧面的一部分与传播面或边缘以预定距离相对，以便以等离子体激元模式与等离子体激元天线耦合的光。在这种配置中，表面等离子体激元可以传播而不会明显地改变其波数，这导致较少的传播损耗，并提高光的使用效率。

48. 发明申请

US20100103553A1 SURFACE PLASMON ANTENNA WITH PROPAGATION EDGE AND NEAR-FIELD LIGHT GENERATING ELEMENT 有权
标题翻译：具有传播边缘和近场光生成元件的表面等离子体天线
公开(公告)号：US20100103553A1
公开(公告)日：2010-04-29
申请号：US12260639
申请日：2008-10-29
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B5/02 , G21G4/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.
摘要翻译：提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。传播表面等离子体激元的边缘是非常窄的传播区域。因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到可靠地到达端面。

49. 发明申请

US20090168220A1 THERMALLY ASSISTED MAGNETIC HEAD AND MANUFACTURING METHOD OF SAME 有权
标题翻译：热辅助磁头及其制造方法
公开(公告)号：US20090168220A1
公开(公告)日：2009-07-02
申请号：US12204452
申请日：2008-09-04
申请人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
发明人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
IPC分类号： G11B5/02 , B44C1/22
CPC分类号： G11B5/314 , G11B2005/0021
摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
摘要翻译：当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端被非常靠近在一起，并且可以执行高密度记录。

50. 发明授权

US08441895B2 Thermally-assisted magnetic recording head with light detector in element-integration surface 有权
标题翻译：热辅助磁记录头，带元件整合表面的光检测器
公开(公告)号：US08441895B2
公开(公告)日：2013-05-14
申请号：US12622962
申请日：2009-11-20
申请人： Koji Shimazawa , Seiichi Takayama , Eiji Komura , Osamu Shindo , Takashi Honda
发明人： Koji Shimazawa , Seiichi Takayama , Eiji Komura , Osamu Shindo , Takashi Honda
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 the light-source output can be adjusted according to its variation by environmental influences and over time. The head comprises: a light source; a write head element provided in a element-integration surface; an optical system provided in the element-integration surface and configured to guide a light emitted from the light source to the vicinity of one end of the write head element; and a light detector for monitoring the light-source output, provided in the element-integration surface and comprising a light-receiving surface covering an area directly above at least a portion of the optical system. This light detector with such a light-receiving surface can detect a leakage light emitted from the optical system as a monitoring light. Therefore, feedback adjustment of the light-source output can be realized to stabilize the intensity of light for thermal-assist applied to a magnetic recording medium.
摘要翻译：提供了一种热辅助磁记录头，其中可以根据环境影响和随时间的变化来调节光源输出。头包括：光源; 设置在元件集成表面中的写入头元件; 光学系统，设置在所述元件一体化表面中并且被配置为将从所述光源发射的光引导到所述写入头元件的一端附近; 以及光检测器，用于监测元件整合表面中的光源输出，并包括覆盖光学系统的至少一部分正上方的区域的光接收表面。具有这种光接收表面的光检测器可以检测从光学系统发射的泄漏光作为监测光。因此，可以实现光源输出的反馈调整，以稳定施加到磁记录介质的热辅助的光的强度。

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