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。

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：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：US08248897B2

公开(公告)日：2012-08-21

申请号：US12899101

申请日：2010-10-06

申请人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

发明人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A method for manufacturing a thermally-assisted magnetic recording head is provided, in which a light source unit including a light source and a slider including an optical system are bonded. A unit substrate is made of a material transmitting light having a predetermined wavelength, and a unit adhesion material layer that contains Sn, Sn alloy, Pb alloy or Bi alloy is formed on the light source unit and/or the slider. The manufacturing method includes: aligning the light source unit and the slider in such a way that a light from the light source can enter the optical system and the unit adhesion material layer is sandwiched therebetween; and causing a light including the predetermined wavelength to enter the unit substrate to melt the unit adhesion material layer. The unit adhesion material layer melted by the light including the predetermined wavelength can ensure high alignment accuracy as well as higher bonding strength and less change with time.

摘要翻译： 提供了一种用于制造热辅助磁记录头的方法，其中包括光源和包括光学系统的滑块的光源单元被结合。 单位基板由透射具有预定波长的光的材料制成，并且在光源单元和/或滑块上形成包含Sn，Sn合金，Pb合金或Bi合金的单位粘附材料层。 该制造方法包括：使光源单元和滑块对准，使得来自光源的光能够进入光学系统，并且单元粘合材料层夹在其间; 并使包含所述预定波长的光进入所述单元基板以熔化所述单元粘合材料层。 由包含预定波长的光熔化的单元粘合材料层可以确保高对准精度以及更高的粘合强度和较小的随时间的变化。

公开(公告)号：US08149653B2

公开(公告)日：2012-04-03

申请号：US12728510

申请日：2010-03-22

申请人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

发明人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/105 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T156/1052

摘要： Provided is a light source unit that is to be joined to a slider to form a thermally-assisted magnetic recording head. The light source unit comprises: a unit substrate having a source-installation surface; a light source provided in the source-installation surface and emitting thermal-assist light; and a photodetector bonded to a rear joining surface of the unit substrate in such a manner that a rear light-emission center of the light source is covered with a light-receiving surface of the photodetector. The photodetector can be sufficiently close to the light source; thus, constant feedback adjustment with high efficiency for the light output of the light source can be performed. This adjustment enables light output from the light source to be controlled in response to changes in light output due to surroundings and to changes with time to stabilize the intensity of light with which a magnetic recording medium is irradiated.

摘要翻译： 提供一种光源单元，其被连接到滑块以形成热辅助磁记录头。 光源单元包括：具有源安装表面的单元基板; 光源，设置在源安装表面中并发射热辅助光; 以及光电检测器，其以使得光源的后发光中心被光电检测器的光接收表面覆盖的方式结合到单元基板的后接合表面。 光电检测器可以足够靠近光源; 因此，可以执行用于光源的光输出的高效率的恒定反馈调整。 该调整使得能够响应于由于周围环境导致的光输出的变化而控制来自光源的光输出，并且随着时间的变化来稳定照射磁记录介质的光的强度。

公开(公告)号：US08248895B2

公开(公告)日：2012-08-21

申请号：US12726981

申请日：2010-03-18

申请人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

发明人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/105 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A method for manufacturing a thermally-assisted magnetic recording head is provided, in which a light source unit including a light source and a slider including an optical system are bonded. A unit substrate is made of a material transmitting light having a predetermined wavelength, and an adhesion material layer is formed on the light source unit and/or the slider. The manufacturing method includes: aligning the light source unit and the slider in such a way that a light from the light source can enter the optical system and the adhesion material layer is sandwiched therebetween; irradiating the adhesion material layer with a light including the predetermined wavelength through the unit substrate; and bonding them. The adhesion material layer melted by the light including the predetermined wavelength and transmitted through the unit substrate can ensure high alignment accuracy as well as higher bonding strength and less change with time.

摘要翻译： 提供了一种用于制造热辅助磁记录头的方法，其中包括光源和包括光学系统的滑块的光源单元被结合。 单位基板由透射具有预定波长的光的材料制成，并且在光源单元和/或滑块上形成粘合材料层。 该制造方法包括：将光源单元和滑块对准，使得来自光源的光能够进入光学系统，并且粘合材料层夹在其间; 用包含所述预定波长的光通过所述单元基板照射所述粘附材料层; 并粘合它们。 由包含预定波长并透过单元基板的光熔化的粘合材料层可以确保高对准精度以及更高的粘接强度和随时间变化的变化。

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。

公开(公告)号：US08116172B2

公开(公告)日：2012-02-14

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

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：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。

公开(公告)号：US08000178B2

公开(公告)日：2011-08-16

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： G11B11/00

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。