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141. 发明申请

US20120176874A1 LIGHT SOURCE UNIT INCLUDING A PHOTODETECTOR, AND THERMALLY-ASSISTED MAGNETIC RECORDING HEAD 有权
标题翻译：光源单元，包括一个光电转换器和一个辅助磁记录头
公开(公告)号：US20120176874A1
公开(公告)日：2012-07-12
申请号：US12986532
申请日：2011-01-07
申请人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA
发明人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA
IPC分类号： G11B13/04 , H01L31/0248 , G11B13/08 , G01D5/32
CPC分类号： G11B5/314 , G01D5/34 , G11B5/6088 , G11B2005/0021
摘要： A light source unit includes a light source and a photodetector. The light source has an emission part for emitting light. The photodetector has a light receiving surface for receiving the light emitted from the emission part, and detects the light. The light source unit further includes a grating made of metal and disposed to extend along the light receiving surface. The grating includes a plurality of line-shaped portions that each extend in a direction intersecting the direction of travel of the light and that are located at positions different from each other along the direction of travel of the light.
摘要翻译：光源单元包括光源和光电检测器。光源具有用于发光的发射部分。光电检测器具有用于接收从发射部分发射的光的光接收表面，并检测光。光源单元还包括由金属制成并被设置为沿着光接收表面延伸的光栅。光栅包括多个线状部分，每个线状部分沿着与光的行进方向交叉的方向延伸，并且位于沿着光的行进方向彼此不同的位置。

142. 发明授权

US08208349B2 Thermally-assisted magnetic recording head having a gap between propagation edge and magnetic pole 有权
标题翻译：热辅助磁记录头在传播边缘和磁极之间具有间隙
公开(公告)号：US08208349B2
公开(公告)日：2012-06-26
申请号：US12688367
申请日：2010-01-15
申请人： Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Takahiko Izawa , Katsuki Kurihara
发明人： Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Takahiko Izawa , Katsuki Kurihara
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.
摘要翻译：热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场极点从其相对到中等表面侧的端部产生写入场。近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分靠近相对中的表面侧。

143. 发明授权

US08194509B2 Thermally-assisted magnetic recording head comprising light source with photonic-band layer 有权
标题翻译：包括具有光子带层的光源的热辅助磁记录头
公开(公告)号：US08194509B2
公开(公告)日：2012-06-05
申请号：US12512249
申请日：2009-07-30
申请人： Koji Shimazawa , Seiichi Takayama , Tsutomu Chou , Eiji Komura
发明人： Koji Shimazawa , Seiichi Takayama , Tsutomu Chou , 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 having sufficiently high output power for performing thermal-assist is disposed in the element-integration surface of the substrate to achieve improved mass-productivity. The head includes: a light source having a multilayered structure including a photonic-band layer and having a light-emitting surface opposed to the element-integration surface; a diffraction optical element that converges the emitted light; a light-path changer that changes the direction of the converged light; a waveguide that propagates the direction-changed light toward the opposed-to-medium surface; and a magnetic pole that generates write field. The surface-emitting type light source includes a photonic-band layer having a periodic structure in which a light from an active region resonates, and thus emits laser light on a quite different principle from a VCSEL. Therefore, the light source can be disposed in the element-integration surface, even though having sufficiently high output power.
摘要翻译：提供了一种热辅助磁记录头，其中具有足够高输出功率的用于进行热辅助的光源设置在基板的元件集成表面中，以实现提高的批量生产率。头包括：具有包括光子带层并且具有与元件一体化表面相对的发光表面的多层结构的光源; 会聚发射光的衍射光学元件; 改变会聚光的方向的光路改变器; 波导，其将所述方向改变的光传播到所述相对中介表面; 以及产生写入场的磁极。表面发射型光源包括具有周期性结构的光子带层，其中来自有源区的光谐振，从而以与VCSEL完全不同的原理发射激光。因此，即使具有足够高的输出功率，也可以将光源配置在元件一体化表面。

144. 发明授权

US08169731B2 Near-field light transducer comprising propagation edge with predetermined curvature radius 有权
标题翻译：近场光传感器包括具有预定曲率半径的传播边
公开(公告)号：US08169731B2
公开(公告)日：2012-05-01
申请号：US12540752
申请日：2009-08-13
申请人： Tomohito Mizuno , Yoshihiro Tsuchiya , Koji Shimazawa , Tsutomu Chou
发明人： Tomohito Mizuno , Yoshihiro Tsuchiya , Koji Shimazawa , Tsutomu Chou
IPC分类号： G11B5/02 , G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001
摘要： Provided is a near-field light transducer with a propagation edge in which the generation of defects is suppressed. The transducer is formed of a Ag alloy and comprises an edge, the edge comprising a portion to be coupled with a light in a surface plasmon mode, the edge extending from the portion to a near-field light generating end surface, and the edge being configured to propagate surface plasmon excited by the light. Further, a curvature radius of the rounded edge is set in the range from 6.25 nm to 20 nm. In the edge and its vicinity, the generation of defects such as cracking and chipping is suppressed. Thereby improved are a propagation efficiency of surface plasmon and a light use efficiency of the transducer. The Ag alloy preferably contains at least one element selected from a group of Pd, Au, Cu, Ru, Rh and Ir.
摘要翻译：提供了具有传播边缘的近场光传感器，其中抑制了缺陷的产生。传感器由Ag合金形成并且包括边缘，边缘包括要与表面等离子体激元模式的光耦合的部分，边缘从该部分延伸到近场光产生端表面，并且该边缘是配置为传播由光激发的表面等离子体激元。此外，圆角边缘的曲率半径设定在6.25nm至20nm的范围内。在边缘及其附近，抑制诸如破裂和碎裂的缺陷的产生。从而改进了表面等离子体激元的传播效率和传感器的光利用效率。 Ag合金优选含有选自Pd，Au，Cu，Ru，Rh和Ir中的至少一种元素。

145. 发明申请

US20120082016A1 OPTICAL WAVEGUIDE AND THERMALLY-ASSISTED MAGNETIC RECORDING HEAD THEREWITH 有权
标题翻译：光波导和热辅助磁记录头
公开(公告)号：US20120082016A1
公开(公告)日：2012-04-05
申请号：US12898063
申请日：2010-10-05
申请人： Eiji Komura , Tsutomu Chou
发明人： Eiji Komura , Tsutomu Chou
IPC分类号： G11B13/08 , G02B6/34
CPC分类号： G02B6/1226 , B82Y20/00 , G02B6/1228 , G02B6/4214 , G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An optical waveguide of the invention includes a core that is a waveguide through which light propagates; and a cladding that surrounds the core. The core has a plate shape and includes a wide core base part onto which the light is incident, a taper part that is connected to the core base part and of which a width is gradually tapered along a propagation direction, and a narrow front end core part that is connected to the taper part and that extends along the propagation direction. A grating is provided on one of planar surfaces of the wide core base part, the grating is formed by engraving a number of concave grooves having a rectangular cross section on the planar surface along a width direction thereof, the grating is formed to be optically coupled with laser light that is incident perpendicularly onto the grating formation surface, a frequency (grating pitch: pitch of the concave grooves) of the grating is smaller than a wavelength (defined as a wavelength in the cladding) of the perpendicularly incident laser light, and a groove depth H1 of the grating is formed with respect to a thickness H2 of the core base part so that a relationship H1=(0.33 to 0.67)×H2 is satisfied.
摘要翻译：本发明的光波导包括：芯，其是光传播的波导; 以及围绕芯的包层。芯具有板状，并且包括光入射的宽核心基部，与芯基部连接并且宽度沿着传播方向逐渐变细的锥形部，并且窄前端芯连接到锥形部分并且沿着传播方向延伸的部分。光栅设置在宽核心基部的一个平面表面上，光栅通过沿平面的宽度方向雕刻多个具有矩形横截面的凹槽而形成，光栅形成为光耦合利用垂直于光栅形成面入射的激光，光栅的频率（光栅间距：凹槽的间距）小于垂直入射的激光的波长（被定义为包层的波长）），并且相对于芯基部的厚度H2形成光栅的槽深H1，使得满足关系H1 =（0.33〜0.67）×H2。

146. 发明授权

US08116175B2 Heat-assisted magnetic recording head including plasmon generator 有权
标题翻译：热辅助磁记录头包括等离子体发生器
公开(公告)号：US08116175B2
公开(公告)日：2012-02-14
申请号：US12719496
申请日：2010-03-08
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Shinji Hara
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Shinji Hara
IPC分类号： G11B11/00
CPC分类号： G11B11/00 , G11B5/02
摘要： A plasmon generator has a near-field light generating part located in a medium facing surface. The plasmon generator has an outer surface including a plasmon exciting surface and a plasmon propagating surface that face toward opposite directions. The plasmon exciting surface is substantially in contact with an evanescent light generating surface of a waveguide's core. The plasmon propagating surface is in contact with a dielectric layer that has a refractive index lower than that of the core. The plasmon exciting surface includes a first width changing portion. The plasmon propagating surface includes a second width changing portion. Each of the first and second width changing portions has a width that decreases with decreasing distance to the medium facing surface, the width being in a direction parallel to the medium facing surface and the evanescent light generating surface.
摘要翻译：等离子体发生器具有位于介质面对表面中的近场光产生部分。等离子体发生器具有外表面，其包括面向相反方向的等离子体激元表面和等离子体激元传播表面。等离子体激元表面基本上与波导芯的瞬逝光产生表面接触。等离子体激元传播表面与折射率低于芯的折射率的电介质层接触。等离子体激元表面包括第一宽度改变部分。等离子体激元传播表面包括第二宽度改变部分。第一和第二宽度改变部分中的每一个具有随着到介质面对表面的距离的减小而减小的宽度，宽度在平行于介质面向表面和渐逝光产生表面的方向上。

147. 发明授权

US08098547B2 Optical waveguide and thermal assist magnetic recording head therewith 有权
标题翻译：光波导和热辅助磁记录头
公开(公告)号：US08098547B2
公开(公告)日：2012-01-17
申请号：US12720083
申请日：2010-03-09
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： G11B11/00
CPC分类号： G02B6/1228 , B82Y20/00 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An optical waveguide, on account of its ability to apply phase resonance of a wavelength and of a first and second triangular plate-like spot size converter members formed of the same material as a core material and being arranged and formed in a substantially symmetrical structure, can promote shortening of the waveguide length and contrive to reduce the size of the optical waveguide itself. Further, an optical waveguide having excellent spot size conversion efficiency can be obtained even in a reduced size.
摘要翻译：光波导由于其施加波长的相位谐振的能力以及由与芯材相同的材料形成并以基本对称的结构形式构成的第一和第二三角形板状光斑尺寸转换器部件，可以促进波导长度的缩短并且有助于减小光波导本身的尺寸。此外，即使在减小的尺寸的情况下也可以获得具有优异的光斑尺寸转换效率的光波导。

148. 发明授权

US08089831B2 Heat-assisted magnetic recording head including plasmon generator 有权
标题翻译：热辅助磁记录头包括等离子体发生器
公开(公告)号：US08089831B2
公开(公告)日：2012-01-03
申请号：US12710129
申请日：2010-02-22
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Daisuke Miyauchi
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A plasmon generator has an outer surface including a surface plasmon exciting surface, and has a near-field light generating part located in a medium facing surface. The surface plasmon exciting surface is a flat surface that faces an evanescent light generating surface of a waveguide with a predetermined distance therebetween. The surface plasmon exciting surface includes a width changing portion. The width of the width changing portion in a direction parallel to the medium facing surface and the evanescent light generating surface decreases with decreasing distance to the medium facing surface. A magnetic pole is located at such a position that the plasmon generator is interposed between the magnetic pole and the waveguide. The outer surface of the plasmon generator includes a pole contact surface that is in contact with the magnetic pole.
摘要翻译：等离子体发生器具有包括表面等离子体激元表面的外表面，并且具有位于介质面对表面中的近场光产生部。表面等离子体激元表面是面对波导的ev逝光产生表面的平坦表面，其间具有预定的距离。表面等离子体激元表面包括宽度改变部分。宽度改变部分在与面向介质的表面和ev逝光产生表面平行的方向上的宽度随着与面向介质的表面的距离的减小而减小。磁极位于这样的位置，等离子体发生器插入在磁极和波导之间。等离子体发生器的外表面包括与磁极接触的极接触表面。

149. 发明申请

US20110292772A1 THERMAL ASSISTED HEAD USING CURVED WAVE GUIDE 有权
标题翻译：热辅助头使用弯曲波导
公开(公告)号：US20110292772A1
公开(公告)日：2011-12-01
申请号：US12786915
申请日：2010-05-25
申请人： Tsutomu Chou , Seiichi Takayama , Eiji Komura
发明人： Tsutomu Chou , Seiichi Takayama , Eiji Komura
IPC分类号： G11B11/00 , G02B6/036
CPC分类号： G11B5/314 , G02B6/107 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A curved waveguide is a curved waveguide that propagates laser light entering from the laser diode as propagating light. The curved waveguide includes a core that is curved in one direction where the propagating light can be propagated and that includes outer surfaces along a propagating direction of the propagating light defined by four surfaces including first and second planar surfaces that curve in respective planar surfaces and that are positioned to face each other, and inside and outside curved surfaces that connect the first and second planar surfaces: an outside metal cladding that is positioned in a direction orthogonal to an oscillation direction of an electric field of the propagating light in a cross section orthogonal to the propagating direction of the propagating light and along the outside curved surface of the core, that is made of gold, silver, copper or aluminum, or that is primarily composed of one component of these materials; and a cladding layer that covers the first and second planar surfaces and the outside metal clad.
摘要翻译：弯曲波导是将从激光二极管进入的激光传播成传播光的弯曲波导。弯曲波导包括在传播光可以传播的一个方向上弯曲的芯，并且包括沿着由四个表面限定的传播光的传播方向的外表面，该四个表面包括在相应的平面中曲线的第一和第二平面表面，并且定位成彼此面对，以及连接第一和第二平面的内表面和外表面：外侧金属包层，其在与正交于横截面正交的传播光的电场的振荡方向正交的方向上传播光的传播方向和沿金属，银，铜或铝制成的芯的外部弯曲表面，或主要由这些材料的一种组分组成; 以及覆盖第一和第二平坦表面和外部金属包层的包覆层。

150. 发明授权

US08029853B2 Fabrication process for magnetoresistive devices of the CPP type 有权
标题翻译： CPP型磁阻器件的制造工艺
公开(公告)号：US08029853B2
公开(公告)日：2011-10-04
申请号：US12292566
申请日：2008-11-20
申请人： Hironobu Matsuzawa , Tsutomu Chou , Yoshihiro Tsuchiya , Shinji Hara
发明人： Hironobu Matsuzawa , Tsutomu Chou , Yoshihiro Tsuchiya , Shinji Hara
IPC分类号： B05D5/12
CPC分类号： G11B5/3163 , B82Y25/00 , B82Y40/00 , G01R33/098 , G11B5/3906 , H01F10/3254 , H01F41/307 , H01L43/12
摘要： The inventive fabrication process for magnetoresistive devices (CPP-GMR devices) involves the formation of a zinc oxide or ZnO layer that provides the intermediate layer of a spacer layer, comprising Zn film formation operation for forming a zinc or Zn layer and Zn film oxidization operation for oxidizing the zinc film after the Zn film formation operation. The Zn film formation operation is implemented such that after a multilayer substrate having a multilayer structure before the formation of the Zn film is cooled down to the temperature range of −140° C. to −60° C., the formation of the Zn film is set off, and the Zn film oxidization operation is implemented such that after the completion of the Zn film oxidization operation, oxidization treatment is set off at the substrate temperature range of −120° C. to −40° C. Thus, excelling in both flatness and crystallizability, the ZnO layer makes sure the device has high MR ratios, and can further have an area resistivity AR best suited for the device.
摘要翻译：用于磁阻器件（CPP-GMR器件）的本发明制造方法涉及形成提供间隔层的中间层的氧化锌或ZnO层，其包括用于形成锌或Zn层的Zn膜形成操作和Zn膜氧化操作用于在Zn膜形成操作之后氧化锌膜。实施Zn膜形成操作，使得在形成Zn膜之前具有多层结构的多层基板被冷却至-140℃至-60℃的温度范围，形成Zn膜并且进行Zn膜氧化操作，使得在Zn膜氧化操作完成之后，在-120℃至-40℃的衬底温度范围内，氧化处理被降低。因此，优异的平坦度和结晶性，ZnO层确保器件具有高MR比，并且还可以具有最适合于器件的面积电阻率AR。

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