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61. 发明授权

US08130599B2 Thermally-assisted magnetic recording head comprising near-field optical device with propagation edge 有权
标题翻译：包括具有传播边缘的近场光学装置的热辅助磁记录头
公开(公告)号：US08130599B2
公开(公告)日：2012-03-06
申请号：US12616924
申请日：2009-11-12
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: an opposed-to-waveguide surface opposed to the waveguide with a predetermined distance; and a propagation edge provided on the side opposite to the opposed-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface can be located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF型光学器件包括：与波导相对的与波导相对的预定距离的相对的波导表面; 以及设置在与所述相对的波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的表面等离子体。在该光学系统中，产生NFL的点的产生NFL的端面可以位于与波导相对的一侧。

62. 发明申请

US20120026846A1 Thermally-Assisted Magnetic Recording Head Comprising Characteristic Clads 有权
标题翻译：包括特征包层的热辅助磁记录头
公开(公告)号：US20120026846A1
公开(公告)日：2012-02-02
申请号：US12848422
申请日：2010-08-02
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head with improved light density of near-field light (NF-light) with which a medium is irradiated. The head comprises: a magnetic pole; a waveguide for propagating light for exciting surface plasmon; a surface plasmon generator provided between the magnetic pole and the waveguide, coupled with the light in a surface plasmon mode, and emitting NF-light; and a clad portion provided at least between the waveguide and the surface plasmon generator and comprising a transition region in which a refractive index decreases along a direction from the waveguide toward the magnetic pole. The provision of the clad portion including the transition region enables improvement of the light density of NF-light due to the convergence of surface plasmon excited in the surface plasmon generator to predetermined locations, while avoiding the problem of temperature rise due to reduction of the volume of surface plasmon generator.
摘要翻译：提供了一种具有改善的照射介质的近场光（NF光）的光密度的热辅助磁记录头。磁头包括：磁极; 用于传播激发表面等离子体激元的光的波导; 设置在磁极和波导之间的表面等离子体发生器，与表面等离子体模式的光耦合，并发射NF光; 以及至少在波导管和表面等离子体激元发生器之间设置的包层部分，并且包括其中折射率沿着从波导到磁极的方向减小的过渡区域。提供包括过渡区域的包层部分能够改善由于在表面等离子体发生器中激发的表面等离子体激元的会聚而导致的NF光的光密度到预定位置，同时避免由于体积的减小导致的温度上升的问题的表面等离子体发生器。

63. 发明申请

US20110110202A1 Thermally-Assisted Magnetic Recording Head Comprising Near-Field Optical Device with Propagation Edge 有权
标题翻译：热辅助磁记录头包括具有传播边的近场光学装置
公开(公告)号：US20110110202A1
公开(公告)日：2011-05-12
申请号：US12616924
申请日：2009-11-12
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: an opposed-to-waveguide surface opposed to the waveguide with a predetermined distance; and a propagation edge provided on the side opposite to the opposed-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface can be located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF型光学器件包括：与波导相对的与波导相对的预定距离的相对的波导表面; 以及设置在与所述相对的波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的表面等离子体。在该光学系统中，产生NFL的点的产生NFL的端面可以位于与波导相对的一侧。

64. 发明申请

US20110026377A1 Thermally-Assisted Magnetic Recording Head Comprising Light Source with Photonic-Band Layer 有权
标题翻译：包含光子带光层的热辅助磁记录头
公开(公告)号：US20110026377A1
公开(公告)日：2011-02-03
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 , G11B5/02
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。

65. 发明授权

US08295003B2 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：US08295003B2
公开(公告)日：2012-10-23
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： G11B5/02 , G02B6/26 , G02B6/42 , G02B6/10
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。

66. 发明授权

US08248890B2 Thermally-assisted head including surface-plasmon resonant optical system 有权
标题翻译：热辅助头包括表面等离子体共振光学系统
公开(公告)号：US08248890B2
公开(公告)日：2012-08-21
申请号：US12946196
申请日：2010-11-15
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B7/00 , G11B7/08
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/105 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： Provided is a surface plasmon resonating optical system emitting near-field light (NF-light) with a higher light density. The system comprises: a waveguide through which a light for exciting surface plasmon propagates; a plasmon generator that couples with the light in a surface plasmon mode and emits NF-light from its NF-light generating end surface; and a resonator mirror that reflects the excited surface plasmon, provided on the side of the plasmon generator opposite to the NF-light generating end surface. In the system, the excited surface plasmon can be amplified by using a resonator structure while reducing the length of the plasmon generator to reduce absorption of surface plasmon and prevent overheating of the plasmon generator.
摘要翻译：提供了具有较高光密度的发射近场光（NF-光）的表面等离子体共振光学系统。该系统包括：用于激发表面等离子体激元的光传播的波导; 等离子体发生器，其以表面等离子体模式耦合光并从其NF光产生端表面发射NF光; 以及反射激发的表面等离子体的谐振镜，设置在等离子体发生器的与NF发光端面相对的一侧。在该系统中，可以通过使用谐振器结构来放大激发的表面等离子体激元，同时减少等离子体发生器的长度以减少表面等离子体的吸收并防止等离子体发生器的过热。

67. 发明授权

US08243559B2 Thermally-assisted magnetic recording head comprising near-field optical device with propagation edge 有权
标题翻译：包括具有传播边缘的近场光学装置的热辅助磁记录头
公开(公告)号：US08243559B2
公开(公告)日：2012-08-14
申请号：US12617853
申请日：2009-11-13
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/6005 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: a contact-to-waveguide surface having a contact to the waveguide; and a propagation edge provided on the side opposite to the contact-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface is reliably located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF光学器件包括：具有与波导的接触的接触到波导表面; 以及设置在与所述接触到所述波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的所述表面等离子体。在该光学系统中，NFL产生端面的产生NF光的点可靠地位于与波导相反的一侧。

68. 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。

69. 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。

70. 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。

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