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1. 发明授权

US10262683B2 Self-aligned hybrid Au—Rh near field transducer for enhanced reliability 有权
公开(公告)号：US10262683B2
公开(公告)日：2019-04-16
申请号：US15011892
申请日：2016-02-01
申请人： Headway Technologies, Inc.
发明人： Matteo Staffaroni , Xuhui Jin , Weihao Xu , Cherng-Chyi Han , Weisheng Hu , Shengyuan Wang
IPC分类号： G11B5/00 , G11B5/31 , G11B5/60
摘要： A near field transducer (NFT) is formed between a waveguide and main pole layer at an air bearing surface (ABS). The NFT includes a resonator body layer made of Au, for example, with a front side at a first plane that is recessed a first distance from the ABS and a back side that is at a second plane formed parallel to the ABS and first plane. The NFT also has a peg layer with a rectangular peg portion between the ABS and first plane, and a larger back portion between the first and second planes that overlays directly above the resonator body layer. The peg layer is preferably made of Rh to improve mechanical stability of the NFT without significantly degrading overall optical efficiency of the NFT. A blocker may be formed between the ABS and waveguide to prevent light not coupled to the NFT from reaching the ABS.

2. 发明授权

US09245554B2 Tilted structures to reduce reflection in laser-assisted TAMR 有权
标题翻译：倾斜结构以减少激光辅助TAMR中的反射
公开(公告)号：US09245554B2
公开(公告)日：2016-01-26
申请号：US14580344
申请日：2014-12-23
申请人： Headway Technologies, Inc.
发明人： Xuhui Jin , Xiaohua Lou , Joe Smyth , Moris Dovek
IPC分类号： G11B5/48 , G11B5/31 , G11B5/60 , G11B5/127 , G11B13/04 , G11B5/00
CPC分类号： G11B5/4866 , G11B5/127 , G11B5/314 , G11B5/6005 , G11B5/6088 , G11B13/04 , G11B2005/0021 , Y10T29/49032
摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and ABS surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser. Variations of the disclosure include tilting the plasmon generator, the waveguide and the laser diode.
摘要翻译： TAMR（热辅助磁记录）写头使用等离子体发生器中的激光激光表面等离激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。光辐射通过波导传输到等离子体发生器，该波导的光轴（中心线）相对于背面法线和ABS表面法线中的任一个或两者倾斜，以消除可能不利地影响的光辐射的反射反射激光的性能和性能。本公开的变型包括倾斜等离子体发生器，波导和激光二极管。

3. 发明授权

US08986556B2 Heat assisted narrow pole design with trailing shield 有权
标题翻译：热辅助窄杆设计与后盾
公开(公告)号：US08986556B2
公开(公告)日：2015-03-24
申请号：US13758561
申请日：2013-02-04
申请人： Headway Technologies, Inc.
发明人： Xuhui Jin , Yuchen Zhou , Kenichi Takano , Joe Smyth
IPC分类号： H01L21/302 , H01L21/461 , B44C1/22 , C03C15/00 , C03C25/68 , C23F1/00 , G11B5/84 , B82Y10/00 , G11B5/31 , G11B5/00
CPC分类号： G11B5/84 , B82Y10/00 , G11B5/3116 , G11B5/314 , G11B2005/0021
摘要： A TAMR (Thermally Assisted Magnetic Recording) write head is formed with a narrow pole tip, a trailing edge magnetic shield and, optionally, a plasmon shield. The narrow pole tipped write head uses the energy of laser generated edge plasmons, formed in a plasmon generating layer, to locally heat a PMR magnetic recording medium slightly below its Curie temperature, Tc. When combined with the effects of the narrow tip, this local heating to a temperature below Tc is sufficient to create good transitions and narrow track widths in the magnetic medium. The write head is capable of writing effectively on state-of-the-art PMR recording media having Hk of 20 kOe or more.
摘要翻译： TAMR（热辅助磁记录）写头形成有窄极尖，后缘磁屏蔽和任选的等离子体屏蔽。窄极头写头使用在等离子体发生层中形成的激光产生的边缘等离子体激元的能量来局部加热略低于其居里温度Tc的PMR磁记录介质。当与窄尖端的作用相结合时，这种局部加热到低于Tc的温度足以在磁性介质中产生良好的转变和窄的轨道宽度。写头能够有效地写入具有20kOe以上Hk的最先进的PMR记录介质。

4. 发明授权

US08755256B2 Plasmon resonator with dual waveguide excitation for TAMR 有权
标题翻译：用于TAMR的具有双波导激励的等离子体谐振器
公开(公告)号：US08755256B2
公开(公告)日：2014-06-17
申请号：US13676490
申请日：2012-11-14
申请人： Headway Technologies, Inc.
发明人： Tobias Maletzky , Xuhui Jin , Yiming Wang , Dayu Zhou , Joe Smyth , Moris Dovek
IPC分类号： G11B11/00
CPC分类号： G11B13/04 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the near field energy of optical-laser excited plasmon eigenmodes in a plasmon resonator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The plasmon resonator is formed as a conducting disk-shaped structure with an extending peg that serves to further confine the near fields within a small region of the recording medium. The resonator eigenmodes are excited, through direct or evanescent coupling, by an interference pattern formed by the overlap of optical waves within a dual-channel waveguide, the interference pattern being the result of the waves in one branch being phase-shifted relative to the waves in the other branch.
摘要翻译： TAMR（热辅助磁记录）写头使用等离子体激元谐振器中的激光激发等离子体激元等离子体本征模态的近场能来局部加热磁记录介质并降低其矫顽力和磁各向异性。等离子体激元谐振器形成为具有延伸钉的导电盘形结构，其用于进一步将近场限制在记录介质的小区域内。谐振器本征模通过直接或消逝耦合被由双通道波导内的光波重叠形成的干涉图形激发，干涉图案是一个分支中相对于波相移的结果的结果在另一个分支。

5. 发明申请

US20190206433A1 Double Ridge Near-Field Transducers 有权
公开(公告)号：US20190206433A1
公开(公告)日：2019-07-04
申请号：US15857847
申请日：2017-12-29
申请人： Headway Technologies, Inc.
发明人： Matteo Staffaroni , Koji Shimazawa , Tobias Maletzky , Xuhui Jin , Yoshihiro Tsuchiya , Tsutomu Chou
IPC分类号： G11B5/60 , G11B5/48 , G11B5/31
CPC分类号： G11B5/6082 , G11B5/3133 , G11B5/314 , G11B5/3163 , G11B5/4866 , G11B5/6088 , G11B2005/0021
摘要： A TAMR (thermally assisted magnetic recording) write head uses a gap-based NFT (near-field transducer) to create plasmon near field energy. In one embodiment the NFT is a double ridge aperture structure that simultaneously delivers low transition curvature and better cross-track thermal gradients than previous designs. In another embodiment a NFT comprises a top and bottom ridge not confined to an aperture structure, made of thermo-mechanically stable materials and a parabolic shaped metal layer disposed adjacent to a dielectric waveguide core to couple optical energy to surface plasmon modes.

6. 发明授权

US10332553B1 Double ridge near-field transducers 有权
公开(公告)号：US10332553B1
公开(公告)日：2019-06-25
申请号：US15857847
申请日：2017-12-29
申请人： Headway Technologies, Inc.
发明人： Matteo Staffaroni , Koji Shimazawa , Tobias Maletzky , Xuhui Jin , Yoshihiro Tsuchiya , Tsutomu Chou
IPC分类号： G11B5/31 , G11B5/60 , G11B5/48 , G11B5/00
CPC分类号： G11B5/6082 , G11B5/3133 , G11B5/314 , G11B5/3163 , G11B5/4866 , G11B5/6088 , G11B2005/0021
摘要： A TAMR (thermally assisted magnetic recording) write head uses a gap-based NFT (near-field transducer) to create plasmon near field energy. In one embodiment the NFT is a double ridge aperture structure that simultaneously delivers low transition curvature and better cross-track thermal gradients than previous designs. In another embodiment a NFT comprises a top and bottom ridge not confined to an aperture structure, made of thermo-mechanically stable materials and a parabolic shaped metal layer disposed adjacent to a dielectric waveguide core to couple optical energy to surface plasmon modes.

7. 发明授权

US09466320B1 Thermal assisted magnetic recording light delivery waveguide circuit for reduced stray light induced writer protrusion 有权
标题翻译：热辅助磁记录光传输波导电路用于减少杂散光引起的写入器突出
公开(公告)号：US09466320B1
公开(公告)日：2016-10-11
申请号：US14918627
申请日：2015-10-21
申请人： Headway Technologies, Inc.
发明人： Matteo Staffaroni , Xuhui Jin , Weihao Xu , Luc Chung
IPC分类号： G11B5/127 , G11B11/00 , G11B5/02 , G11B5/48 , G11B5/60 , G11B5/31 , G11B5/00
CPC分类号： G11B5/314 , G11B5/3116 , G11B5/3136 , G11B5/6088 , G11B2005/0021
摘要： A thermally assisted magnetic recording head is disclosed with a light delivery waveguide circuit wherein a middle section of the primary waveguide (WG) has a curved portion. In one embodiment, the curved portion connects to a front WG section at the air bearing surface (ABS) and is offset in a cross-track direction from the laser diode to prevent stray light from heating metal parts proximate to the front section and undesirable writer protrusion. Optionally, a reflective blocker is inserted between the WG spot size converter and ABS. In a second embodiment, the laser diode, spot size converter, and front WG section are all aligned along a center slider plane. The curved portion has at least one 180° bend to bend light around the blocker that is between the spot size converter and WG front section. The blocker is tilted to prevent reflected light from returning to the laser diode.
摘要翻译：公开了一种热辅助磁记录头，其具有光传输波导电路，其中初级波导（WG）的中间部分具有弯曲部分。在一个实施例中，弯曲部分连接到空气轴承表面（ABS）处的前部WG部分，并且在与激光二极管的横向方向上偏移以防止杂散光加热接近前部的金属部件和不期望的作者突出。可选地，反射阻挡剂插入在WG点尺寸转换器和ABS之间。在第二实施例中，激光二极管，光斑尺寸转换器和前部WG部分都沿着中心滑块平面排列。弯曲部分具有至少一个180°的弯曲以弯曲位于光斑尺寸转换器和WG前部之间的阻挡件周围的光。阻挡器被倾斜以防止反射光返回到激光二极管。

8. 发明授权

US08873354B2 Polarization rotator for thermally assisted magnetic recording 有权
标题翻译：用于热辅助磁记录的极化旋转器
公开(公告)号：US08873354B2
公开(公告)日：2014-10-28
申请号：US14303739
申请日：2014-06-13
申请人： Headway Technologies, Inc.
发明人： Xuhui Jin , Hiroyuki Ito , Yoshitaka Sasaki , Shigeki Tanemura
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00
CPC分类号： G02B6/105 , G02B2006/12173 , G02B2006/12176 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B2005/0021 , Y10T29/49032
摘要： A waveguide structure with a light polarization rotator section for converting transverse electric light from a TE light source to transverse magnetic light which is subsequently coupled to a plasmon generator (PG) is disclosed. Wavelengths above 800 nm are advantageously used to reduce resistive heating in the PG, and in adjacent cladding and write pole layers to improve the thermally assisted magnetic recording head lifetime. The light polarization rotator section has a length determined by TE LD light wavelength, and the effective mode index of the two orthogonal fundamental modes, and has curved portions to enable a greater length to accommodate longer TE light wavelengths without increasing the waveguide distance between the air bearing surface and back end of the device.
摘要翻译：公开了一种具有光偏转旋转部分的波导结构，用于将TE光源的横向电光转换成后耦合到等离子体发生器（PG）的横向磁光。高于800nm的波长有利地用于减少PG中的电阻加热，以及相邻的包层和写极层中的电阻加热，以改善热辅助磁记录头寿命。光偏振旋转器部分具有由TE LD光波长确定的长度和两个正交基模的有效模式指数，并且具有弯曲部分以使得能够更长的长度以适应更长的TE光波长，而不增加空气之间的波导距离轴承表面和后端。

9. 发明申请

US20140133283A1 Plasmon Resonator with Dual Waveguide Excitation for TAMR 有权
标题翻译：用于TAMR的双波导激发等离子体谐振器
公开(公告)号：US20140133283A1
公开(公告)日：2014-05-15
申请号：US13676490
申请日：2012-11-14
申请人： HEADWAY TECHNOLOGIES, INC.
发明人： Tobias Maletzky , Xuhui Jin , Yiming Wang , Dayu Zhou , Joe Smyth , Moris Dovek
IPC分类号： G11B13/04
CPC分类号： G11B13/04 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the near field energy of optical-laser excited plasmon eigenmodes in a plasmon resonator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The plasmon resonator is formed as a conducting disk-shaped structure with an extending peg that serves to further confine the near fields within a small region of the recording medium. The resonator eigenmodes are excited, through direct or evanescent coupling, by an interference pattern formed by the overlap of optical waves within a dual-channel waveguide, the interference pattern being the result of the waves in one branch being phase-shifted relative to the waves in the other branch.
摘要翻译： TAMR（热辅助磁记录）写头使用等离子体激元谐振器中的激光激发等离子体激元等离子体本征模态的近场能来局部加热磁记录介质并降低其矫顽力和磁各向异性。等离子体激元谐振器形成为具有延伸钉的导电盘形结构，其用于进一步将近场限制在记录介质的小区域内。谐振器本征模通过直接或消逝耦合被由双通道波导内的光波重叠形成的干涉图形激发，干涉图案是一个分支中相对于波相移的结果的结果在另一个分支。

10. 发明申请

US20140112115A1 Reduced Plasmon Shield-Generator Gap Structure and Process 有权
标题翻译：减少等离子体盾构发生器间隙结构和过程
公开(公告)号：US20140112115A1
公开(公告)日：2014-04-24
申请号：US13654490
申请日：2012-10-18
申请人： HEADWAY TECHNOLOGIES, INC.
发明人： Xuhui Jin , Hiroyuki Ito , Shigeki Tanemura , Dayu Zhou
IPC分类号： G11B13/04 , G11B7/22 , G11B5/127 , B82Y10/00
CPC分类号： G11B5/314 , G11B5/3163 , G11B2005/0021
摘要： Three structures, and processes for manufacturing them, that improve the performance of a TAMR feature in a magnetic write head are disclosed. This improvement is achieved by making the separation between the edge plasmon generator and the plasmon shield less than the separation between the edge plasmon generator and the optical wave-guide.
摘要翻译：公开了三种结构及其制造方法，其改进磁写头中的TAMR特征的性能。这种改进通过使边缘等离子体发生器和等离子体屏蔽之间的分离小于边缘等离子体发生器和光波导之间的间隔来实现。

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