公开(公告)号：US20100202256A1

公开(公告)日：2010-08-12

申请号：US12320930

申请日：2009-02-09

申请人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

发明人： Yasuhiro Ito ,  Seiichi Takayama ,  Eiji Komura ,  Koji Shimazawa ,  Satoshi Tomikawa ,  Shuichi Okawa

IPC分类号： G11B11/00 ,  G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10534 ,  G11B11/1058 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A near-field light generating device includes: a base having a top surface; a waveguide that allows laser light to propagate therethrough and is disposed above the top surface of the base; and a surface plasmon generating element that is disposed above the top surface of the base so as to adjoin the waveguide in a direction parallel to the top surface of the base. The waveguide has a side surface that faces the surface plasmon generating element. The surface plasmon generating element includes: a coupling part that is opposed to a part of the side surface of the waveguide with spacing therebetween and causes excitation of a surface plasmon by coupling with evanescent light occurring from the part of the side surface; and a near-field light generating part that generates near-field light based on the surface plasmon excited at the coupling part.

摘要翻译： 近场光产生装置包括：具有顶表面的底座; 波导，其允许激光通过其传播并设置在基座的顶表面上方; 以及表面等离子体激元产生元件，其设置在所述基座的顶表面之上，以便在与所述基座的顶表面平行的方向上邻接所述波导。 波导具有面向表面等离子体激元产生元件的侧表面。 表面等离子体发生元件包括：耦合部分，其与波导的侧表面的一部分相对，并且通过与从侧表面的部分发生的渐逝光耦合而引起表面等离子体激发; 以及基于在耦合部激发的表面等离子体激元产生近场光的近场光产生部。

公开(公告)号：US20100195238A1

公开(公告)日：2010-08-05

申请号：US12363010

申请日：2009-01-30

申请人： Koji Shimazawa ,  Eiji Komura ,  Seiichi Takayama

发明人： Koji Shimazawa ,  Eiji Komura ,  Seiichi Takayama

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally assisted magnetic head includes: a slider having a medium-facing surface; and a surface-emitting semiconductor laser. The slider has: a slider substrate, on which part of the medium-facing surface is formed; and a magnetic head portion, on which another part of the medium-facing surface is formed, and which has a first surface in contact with a head stacking surface of the slider substrate and a second surface opposite the first surface. The magnetic head portion has: a main magnetic pole that generates a write magnetic field from an end face on the side of the medium-facing surface; an optical waveguide core extending along the first surface and having a light exit surface at the medium-facing surface; and a diffraction grating, which is provided in the optical waveguide core or further towards the second surface than the optical waveguide core, and the refractive index of which varies periodically along the direction in which the optical waveguide core extends. The surface-emitting semiconductor laser is provided opposing the second surface so that emission light from the surface-emitting semiconductor laser is incident onto the diffraction grating, and the diffraction grating causes at least part of emission light from the surface-emitting semiconductor laser to be optically coupled to the optical waveguide core.

摘要翻译： 热辅助磁头包括：具有中等面向表面的滑块; 和表面发射半导体激光器。 滑块具有：形成介质面的一部分的滑块基板; 以及磁头部分，其上形成有介质相对表面的另一部分，并且具有与滑块基板的磁头堆叠表面接触的第一表面和与第一表面相对的第二表面。 磁头部具有：主磁极，其从中间面的一侧的端面产生写入磁场; 光波导芯，沿着所述第一表面延伸并且在所述面向中的表面处具有光出射表面; 以及衍射光栅，其设置在光波导芯中或者比光波导芯更靠近第二表面，并且其折射率沿着光波导芯延伸的方向周期性地变化。 表面发射半导体激光器被设置为与第二表面相对，使得来自表面发射半导体激光器的发射光入射到衍射光栅上，并且衍射光栅使得来自表面发射半导体激光器的至少一部分发射光为 光耦合到光波导芯。

公开(公告)号：US08424191B2

公开(公告)日：2013-04-23

申请号：US12648079

申请日：2009-12-28

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： G11B11/12

CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021 ,  Y10T29/49032 ,  Y10T29/49037 ,  Y10T29/49055 ,  Y10T29/49059

摘要： A method for manufacturing a thermally-assisted magnetic recording head is provided, in which joined are: a light source unit that includes a light source having a surface including a light-emission center on the joining surface side of a unit substrate; and a slider that includes an optical system having a light-receiving end surface reaching a back surface opposite to the opposed-to-medium surface. This method utilizes “semi-active alignment” that uses an alignment light, and comprises steps of: causing a light to enter the light source from a surface opposite to the light-emission center; detecting the light that has passed through the light source and is emitted from the light-emission center to align the light-emission center with the light-receiving end surface of the slider; and bonding the light source unit to the slider. This manufacturing method can achieve the alignment with a sufficiently high alignment accuracy in a short processing time.

摘要翻译： 提供了一种用于制造热辅助磁记录头的方法，其中连接有：光源单元，其包括在单元基板的接合表面侧上具有包括发光中心的表面的光源; 以及包括光学系统的滑块，所述光学系统具有到达相对于中间表面的后表面的光接收端面。 该方法采用使用对准光的“半主动对准”，其包括以下步骤：使光从与发光中心相反的表面进入光源; 检测已经通过光源并从发光中心射出的光，使发光中心与滑块的受光端面对准; 并将光源单元接合到滑块。 该制造方法可以在短的处理时间内以足够高的对准精度实现对准。

公开(公告)号：US08065786B2

公开(公告)日：2011-11-29

申请号：US12108234

申请日：2008-04-23

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 ,  H04R31/00

CPC分类号： G11B5/314 ,  G11B5/102 ,  G11B5/3163 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T29/49025 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052 ,  Y10T156/1062

摘要： Provided is a manufacturing method of heat-assisted magnetic recording head, in which a light source unit can be easily joined to a slider with sufficiently high accuracy, under avoiding the excessive mechanical stress. The manufacturing method comprises the steps of: moving relatively the light source unit and the slider, while applying a sufficient voltage between an upper electrode of the light source and an electrode layer provided in the slider; and setting the light source unit and the slider in desired positions in a direction perpendicular to the element-integration surface of the slider substrate. The desired positions are positions where the light source just emits due to a surface contact between: the protruded portion of the lower surface of the light source; and the upper surface of the electrode layer, which is a portion of the wall surface of a step formed on the head part.

摘要翻译： 提供一种热辅助磁记录头的制造方法，其中光源单元可以以足够高的精度容易地接合到滑块，以避免过度的机械应力。 该制造方法包括以下步骤：在光源的上电极和设置在滑块中的电极层之间施加足够的电压，相对移动光源单元和滑块; 以及将光源单元和滑块设置在与滑动器基板的元件集成表面垂直的方向上的期望位置。 期望的位置是由于光源的下表面的突出部分之间的表面接触而光源刚刚发射的位置; 以及作为形成在头部上的台阶的壁面的一部分的电极层的上表面。

公开(公告)号：US08000175B2

公开(公告)日：2011-08-16

申请号：US12363010

申请日：2009-01-30

申请人： Koji Shimazawa ,  Eiji Komura ,  Seiichi Takayama

发明人： Koji Shimazawa ,  Eiji Komura ,  Seiichi Takayama

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally assisted magnetic head includes: a slider having a medium-facing surface; and a surface-emitting semiconductor laser. The slider has: a slider substrate, on which part of the medium-facing surface is formed; and a magnetic head portion, on which another part of the medium-facing surface is formed, and which has a first surface in contact with a head stacking surface of the slider substrate and a second surface opposite the first surface. The magnetic head portion has: a main magnetic pole that generates a write magnetic field from an end face on the side of the medium-facing surface; an optical waveguide core extending along the first surface and having a light exit surface at the medium-facing surface; and a diffraction grating, which is provided in the optical waveguide core or further towards the second surface than the optical waveguide core, and the refractive index of which varies periodically along the direction in which the optical waveguide core extends. The surface-emitting semiconductor laser is provided opposing the second surface so that emission light from the surface-emitting semiconductor laser is incident onto the diffraction grating, and the diffraction grating causes at least part of emission light from the surface-emitting semiconductor laser to be optically coupled to the optical waveguide core.

摘要翻译： 热辅助磁头包括：具有中等面向表面的滑块; 和表面发射半导体激光器。 滑块具有：形成介质面的一部分的滑块基板; 以及磁头部分，其上形成有介质相对表面的另一部分，并且具有与滑块基板的磁头堆叠表面接触的第一表面和与第一表面相对的第二表面。 磁头部具有：主磁极，其从中间面的一侧的端面产生写入磁场; 光波导芯，沿着所述第一表面延伸并且在所述面向中的表面处具有光出射表面; 以及衍射光栅，其设置在光波导芯中或者比光波导芯更靠近第二表面，并且其折射率沿着光波导芯延伸的方向周期性地变化。 表面发射半导体激光器被设置为与第二表面相对，使得来自表面发射半导体激光器的发射光入射到衍射光栅上，并且衍射光栅使得来自表面发射半导体激光器的至少一部分发射光为 光耦合到光波导芯。

公开(公告)号：US20110122737A1

公开(公告)日：2011-05-26

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 ,  G11B5/02 ,  G11B5/48

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。

公开(公告)号：US20100290323A1

公开(公告)日：2010-11-18

申请号：US12453508

申请日：2009-05-13

申请人： Makoto Isogai ,  Susumu Aoki ,  Daisuke Miyauchi ,  Eiji Komura ,  Seiichi Takayama

发明人： Makoto Isogai ,  Susumu Aoki ,  Daisuke Miyauchi ,  Eiji Komura ,  Seiichi Takayama

IPC分类号： G11B11/00 ,  G11B5/02 ,  G11B5/48 ,  C23C16/06

CPC分类号： G11B5/314 ,  G11B5/4826 ,  G11B5/6005 ,  G11B2005/001 ,  G11B2005/0021

摘要： A near-field light generating device includes: a waveguide having a groove that opens in the top surface; a clad layer disposed on the top surface of the waveguide and having an opening that is contiguous to the groove; a near-field light generating element accommodated in the opening; and a buffer layer interposed between the near-field light generating element and each of the waveguide and the clad layer in the groove and the opening. The near-field light generating element includes: first and second side surfaces that decrease in distance from each other toward the groove; an edge part that connects the first and second side surfaces to each other and is opposed to the groove with the buffer layer therebetween; and a near-field light generating part that lies at one end of the edge part and generates near-field light.

摘要翻译： 近场光产生装置包括：具有在顶面开口的槽的波导; 包层，设置在波导的顶表面上，并且具有与槽邻接的开口; 容纳在所述开口中的近场光产生元件; 以及介于所述近场光产生元件与所述槽和所述开口中的所述波导和所述包覆层中的每一个之间的缓冲层。 近场光产生元件包括：相对于凹槽彼此间隔距离减小的第一和第二侧表面; 边缘部分，其将所述第一和第二侧表面彼此连接并且与所述凹槽相对，其间具有缓冲层; 以及位于边缘部的一端的近场光产生部，产生近场光。

公开(公告)号：US07821732B2

公开(公告)日：2010-10-26

申请号：US12237810

申请日：2008-09-25

申请人： Eiji Komura ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Kosuke Tanaka ,  Koji Shimazawa

发明人： Eiji Komura ,  Seiichi Takayama ,  Satoshi Tomikawa ,  Kosuke Tanaka ,  Koji Shimazawa

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thermally assisted magnetic head according to the present invention includes: a medium-facing surface, a main magnetic pole provided on the medium-facing surface, and a plasmon antenna provided on the medium-facing surface in the vicinity of the main magnetic pole, wherein the plasmon antenna is shaped as a triangular flat plate having first, second and third corners, such that the distance from the first corner to the main magnetic pole is shorter than the distance from the second corner to the main magnetic pole and the distance from the third corner to the main magnetic pole, and the interior angle α of the first corner, the interior angle β of the second corner and the interior angle γ of the third corner satisfy relationships α

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。

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。