公开(公告)号：US20140269233A1

公开(公告)日：2014-09-18

申请号：US13830910

申请日：2013-03-14

Applicant: TDK Corporation

Inventor： Shinji HARA ,  Tsutomu CHOU ,  Koji SHIMAZAWA ,  Eiji KOMURA ,  Seiichi TAKAYAMA ,  Yasuhiro ITO

IPC: G11B13/04

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermally assisted magnetic recording head includes core that propagates laser light as propagation light, a near-field light generator that faces a portion of the core and extends to an air bearing surface (ABS), the near-field light generator coupled to the propagation light propagating through the core so as to generate a surface plasmon, propagating the surface plasmon to an end part facing the ABS, and generating near-field light at the end part to irradiate the near-field light to a magnetic recording medium, a main magnetic pole layer provided in the vicinity of the near-field light generator where an end part is positioned on the ABS, a laser diode that generates laser light of wavelength 890 nm to 1,000 nm and enters the laser light into the core, and a photodiode provided on a silicon substrate measures an intensity of the laser light entering from the laser diode to the core.

Abstract translation: 热辅助磁记录头包括将激光作为传播光传播的芯，近场光发生器，其面对芯的一部分并延伸到空气轴承表面（ABS），近场光发生器耦合到传播 光传播通过芯，以产生表面等离子体，将表面等离子体传播到面向ABS的端部，并在端部产生近场光，以将近场光照射到磁记录介质，主 设置在近场光发生器附近的磁极层，端部位于ABS上;激光二极管，其生成波长为890nm至1000nm的激光并将激光进入芯中;以及光电二极管 设置在硅衬底上测量从激光二极管进入芯的激光的强度。

公开(公告)号：US20140233361A1

公开(公告)日：2014-08-21

申请号：US13772936

申请日：2013-02-21

Applicant: TDK CORPORATION

Inventor： Koji SHIMAZAWA

IPC: G11B13/04 ,  G11B5/127

CPC classification number: G11B5/314 ,  G02B6/1226 ,  G11B5/3173 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T29/49048

Abstract: This thermally-assisted magnetic recording head includes: a waveguide; a magnetic pole; and a plasmon generator having a first region and a second region, in which the first region has an one end exposed on an air-bearing surface and another end located on an opposite side of the air-bearing surface, and in which the second region is coupled to the another end of the first region and has a volume greater than a volume of the first region. The first region includes a high-density region having a density that is greater than the density of the second region.

Abstract translation: 该热辅助磁记录头包括：波导; 磁极 以及具有第一区域和第二区域的等离子体发生器，其中所述第一区域具有暴露在空气轴承表面上的一端和位于所述空气轴承表面的相对侧上的另一端，并且所述第二区域 耦合到第一区域的另一端并且具有大于第一区域的体积的体积。 第一区域包括密度大于第二区域的密度的高密度区域。

公开(公告)号：US20140204723A1

公开(公告)日：2014-07-24

申请号：US13746771

申请日：2013-01-22

Applicant: TDK CORPORATION

Inventor： Koji SHIMAZAWA

IPC: G11B13/08

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T29/49021

Abstract: This thermally-assisted magnetic recording head includes: a waveguide having a first end surface included in an air bearing surface; a magnetic pole having a second end surface included in the air bearing surface; a plasmon generator having a third end surface included in the air bearing surface; a first film covering the first end surface of the waveguide and the second end surface of the magnetic pole, and having an opening in a region corresponding to the third end surface of the plasmon generator; and a second film filling the opening and covering the third end surface of the plasmon generator.

Abstract translation: 该热辅助磁记录头包括：具有包括在空气轴承表面中的第一端面的波导; 具有包括在所述空气轴承表面中的第二端面的磁极; 等离子体发生器，其具有包括在所述空气轴承表面中的第三端面; 覆盖波导的第一端面和磁极的第二端面的第一膜，在与等离子体发生器的第三端面对应的区域中具有开口部; 以及填充所述开口并覆盖所述等离子体发生器的第三端面的第二膜。