-
公开(公告)号：US09558769B1
公开(公告)日：2017-01-31
申请号：US14871648
申请日：2015-09-30
Applicant: HGST Netherlands B.V.
Inventor： Seheon Kim , Takuya Matsumoto , Shen Ren , Barry C. Stipe
CPC classification number: G11B5/314 , G11B5/6088 , G11B11/10532 , G11B11/10543 , G11B11/10554 , G11B2005/0021
Abstract: A system, according to one embodiment, includes a magnetic head having: a near field transducer, an optical waveguide for illumination of the near field transducer, and an anti-reflection block positioned along the optical waveguide farther from a media facing side of the magnetic head than the near field transducer. The anti-reflection block is positioned a distance from the near field transducer to destructively interfere with light reflected away from the near field transducer. Other systems, methods, and computer program products are described in additional embodiments.
Abstract translation: 根据一个实施例的系统包括磁头，该磁头具有：近场换能器，用于照射近场换能器的光波导，以及沿着光波导放置的防反射块，远离磁介质的介质侧 头比近场传感器。 防反射块距离近场传感器一定距离，以破坏性地干扰远离近场传感器的光。 在另外的实施例中描述了其他系统，方法和计算机程序产品。
-
2.发明授权Waveguide power sensor structures free of optical coherence effects in a HAMR drive 有权波导功率传感器结构在HAMR驱动器中没有光学相干效应公开(公告)号：US09202492B2
公开(公告)日：2015-12-01
申请号：US14265474
申请日：2014-04-30
Applicant: HGST Netherlands B.V.
Inventor： Seheon Kim , Takuya Matsumoto , Shen Ren , Barry C. Stipe
CPC classification number: G11B5/6088 , G11B5/314 , G11B5/4866 , G11B2005/0021
Abstract: Embodiments disclosed herein generally relate to a HAMR device for use in a magnetic reading system. The HAMR device has a primary waveguide extending from a media facing surface to a surface opposite the media facing surface. In one embodiment, the HAMR head has a secondary waveguide having a first and second end positioned within the HAMR head. The secondary waveguide is positioned near the primary waveguide, and the first and second ends of the secondary waveguide are non-reflecting. A thermal sensor is coupled to the secondary waveguide, and responds only to optical power fluctuations in the primary waveguide. In another embodiment, the HAMR head has a second thermal sensor rather than a secondary waveguide. The first thermal sensor and the second thermal sensor are coupled together to act as one optical power sensor and are disposed on the primary waveguide.
Abstract translation: 本文公开的实施例一般涉及用于磁读取系统的HAMR装置。 HAMR器件具有从介质面向表面延伸到与介质相对表面相对的表面的主波导。 在一个实施例中，HAMR头具有第二和第二端定位在HAMR头内的次级波导。 次级波导位于主波导附近，次级波导的第一和第二端是非反射的。 热传感器耦合到次级波导，并且仅响应于初级波导中的光功率波动。 在另一个实施例中，HAMR头具有第二热传感器而不是次级波导。 第一热传感器和第二热传感器耦合在一起以用作一个光功率传感器并且设置在主波导上。
-
公开(公告)号：US09053716B1
公开(公告)日：2015-06-09
申请号：US14271743
申请日：2014-05-07
Applicant: HGST Netherlands B.V.
Inventor： Takuya Matsumoto , Shen Ren , Barry C. Stipe
CPC classification number: G11B5/314 , G11B5/02 , G11B5/6088 , G11B2005/0021
Abstract: Embodiments disclosed herein generally relate to a magnetic write head including a media facing surface and a surface opposite the media facing surface. The magnetic write head also includes a SSC having a first end extending to the surface opposite the media facing surface. The first end of the SSC has at least two tips. The multiple-tipped first end of the SSC is configured to receive a laser beam and the laser beam coupling efficiency is improved by having the multiple-tipped first end.
Abstract translation: 本文公开的实施例通常涉及包括介质面向表面和与介质相对表面相对的表面的磁性写入头。 磁写头还包括SSC，其具有延伸到与介质相对表面相对的表面的第一端。 SSC的第一端至少有两个提示。 SSC的多头第一端被配置为接收激光束，并且通过具有多尖端的第一端来提高激光束耦合效率。
-
4.发明授权Dual thermal sensor for HAMR waveguide power monitor and integration with the contact sensor 有权双热传感器用于HAMR波导功率监视器并与接触传感器集成公开(公告)号：US09047926B2
公开(公告)日：2015-06-02
申请号：US14057044
申请日：2013-10-18
Applicant: HGST Netherlands B.V.
Inventor： John T. Contreras , Lidu Huang , Takuya Matsumoto , Shen Ren , Erhard Schreck , Barry C. Stipe
CPC classification number: G11B33/144 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B2005/0021
Abstract: Embodiments of the present invention generally relate to a HAMR device having two temperature sensors. The first temperature sensor is disposed adjacent a waveguide and is about two or more micrometers away from an air bearing surface. The first temperature sensor has a length, a width and a thickness, and the length is greater than the width and the thickness. The length of the first temperature sensor is substantially perpendicular to the waveguide.
Abstract translation: 本发明的实施例一般涉及具有两个温度传感器的HAMR装置。 第一温度传感器设置在波导附近并且离空气轴承表面大约两个或多个微米。 第一温度传感器具有长度，宽度和厚度，长度大于宽度和厚度。 第一温度传感器的长度基本上垂直于波导。
-
5.发明申请Submount-Integrated PhotoDetector For Monitoring A Laser For A Heat-Assisted Magnetic Recording Head 有权用于监控热辅助磁记录头的激光的底座集成光检测器公开(公告)号：US20150146507A1
公开(公告)日：2015-05-28
申请号：US14089589
申请日：2013-11-25
Applicant: HGST Netherlands B.V.
Inventor： Thomas Dudley Boone, JR. , Takuya Matsumoto , Shen Ren
IPC: G11B5/48
CPC classification number: G11B5/4866 , G11B5/105 , G11B5/314 , G11B5/455 , G11B5/6088 , G11B7/1384 , G11B2005/001 , G11B2005/0021
Abstract: In a heat-assisted magnetic recording hard disk drive, a laser module includes a submount-integrated photodetector configured to receive optical energy from a laser by way of a head slider. The submount may be formed of a semiconductor material such as a crystalline silicon material, and the photodetector may be a photodiode that is integrally formed with the submount. A HAMR head slider may comprise a feedback waveguide configured to guide optical energy from the laser through the slider to a feedback photodiode at an interface of the submount and the slider, to detect the optical energy transmitted through the slider to the slider air bearing surface (ABS). A back facet photodiode may also be integrally formed with the submount and configured to receive back facet optical energy to detect the optical energy generated by the laser.
Abstract translation: 在热辅助磁记录硬盘驱动器中，激光模块包括配置成通过磁头滑块从激光器接收光能的基座集成光电检测器。 基座可以由诸如晶体硅材料的半导体材料形成，并且光电检测器可以是与底座一体形成的光电二极管。 HAMR磁头滑动器可以包括反馈波导，其被配置为将来自激光器的光能通过滑块引导到在底座和滑块的界面处的反馈光电二极管，以检测通过滑块传递到滑动器空气轴承表面的光能（ ABS）。 背面光电二极管也可以与底座一体地形成，并且被配置为接收背面光能以检测由激光产生的光能。
-
Patent Agency Ranking
公开(公告)号：US09424865B2
公开(公告)日：2016-08-23
申请号：US14533027
申请日：2014-11-04
Applicant: HGST Netherlands B.V.
Inventor： Shen Ren , Erhard Schreck , Matteo Staffaroni , Barry C. Stipe
CPC classification number: G11B5/314 , G11B5/6088 , G11B2005/0021 , G11B2005/0024
Abstract: A method for annealing a metal antenna of a near field optical transducer of a magnetic write element without inadvertently heat damaging the read element. A heating element is placed within a write head build in a cerf region outside of the active area of the read and write heads. A layer of thermally conductive, electrically insulating material is formed over the heating element to separate the heating element from the antenna. The thermally conductive, electrically insulating layer is preferably in contact with the antenna. A current can be applied to the heating element to heat the antenna to a temperature that is at or above the operating temperature of the optical transducer. After annealing, the heater element can be removed by the lapping process that is used to define the media facing surface of the head.
Abstract translation: 一种用于退磁磁写入元件的近场光学换能器的金属天线的方法，而不会无意地热损坏读取元件。 加热元件放置在读写头的有效区域外部的区域内的写入头构建中。 在加热元件上形成导热电绝缘材料层，以将加热元件与天线分开。 导热电绝缘层优选地与天线接触。 可以将电流施加到加热元件以将天线加热到等于或高于光学换能器的工作温度的温度。 在退火之后，加热元件可以通过研磨工艺来去除，该研磨工艺用于限定头部与介质相对的表面。
-
7.发明授权Combined micro heater and waveguide power sensor for heat-assisted magnetic recording 有权用于热辅助磁记录的组合微加热器和波导功率传感器公开(公告)号：US09087546B1
公开(公告)日：2015-07-21
申请号：US14271254
申请日：2014-05-06
Applicant: HGST Netherlands B.V.
Inventor： Michael K. Grobis , Lidu Huang , Shen Ren , Hans J. Richter , Erhard Schreck , Barry C. Stipe
IPC: G11B11/00 , G11B11/105 , G11B5/02 , G11B5/00
CPC classification number: G11B11/10536 , G11B5/02 , G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: In one general embodiment, an apparatus includes a write pole, a near field transducer, a waveguide for delivering light to the near field transducer, and a first heating device positioned between the write pole and at least one of the waveguide and the near field transducer.
Abstract translation: 在一个一般实施例中，一种装置包括写极，近场换能器，用于将光传送到近场换能器的波导，以及位于写极和至少一个波导与近场换能器之间的第一加热装置 。
-
8.发明授权Slider embedded photodetector for optical power monitoring in heat assisted magnetic recording 有权滑块嵌入式光电探测器，用于热辅助磁记录中的光功率监测公开(公告)号：US08854930B1
公开(公告)日：2014-10-07
申请号：US13958372
申请日：2013-08-02
Applicant: HGST Netherlands B.V.
Inventor： Thomas William Clinton , Takuya Matsumoto , Shen Ren , Erhard Schreck , Barry Cushing Stipe
CPC classification number: G11B7/1263 , G11B5/02 , G11B5/4866 , G11B2005/0021
Abstract: Techniques for improving the recording quality during heat assisted magnetic recording (HAMR) by monitoring the power of a source used to heat a storage medium are described. In one example, a source emits electromagnetic radiation. A waveguide transmits the electromagnetic radiation onto a surface of a magnetic media. A photoresistive material is proximately located to the waveguide. The resistance of the photoresistive material varies based on the intensity of electromagnetic radiation propagating through the waveguide. The power of the source is determined by measuring the resistance of the photoresitive material. The power of the source is adjusted based on the determined power.
Abstract translation: 描述了通过监测用于加热存储介质的源的功率来改善热辅助磁记录（HAMR）中的记录质量的技术。 在一个示例中，源发射电磁辐射。 波导将电磁辐射传输到磁性介质的表面上。 光致抗蚀剂材料位于波导附近。 光致抗蚀剂材料的电阻根据通过波导传播的电磁辐射的强度而变化。 源的功率通过测量光电材料的电阻来确定。 源的功率根据确定的功率进行调整。
-
公开(公告)号：US10175122B2
公开(公告)日：2019-01-08
申请号：US15160325
申请日：2016-05-20
Applicant: HGST Netherlands B.V.
Inventor： John T. Contreras , Lidu Huang , Shen Ren , Erhard Schreck , Rehan A. Zakai
Abstract: Embodiments disclosed herein generally relate to a method for monitoring optical power in a HAMR device. In one embodiment, the method includes enhancing a thermal sensor bandwidth through advanced electrical detection techniques. The advanced electrical detection techniques include obtaining calibration waveform data for a thermal sensor by calibrating the thermal sensor, obtaining real-time waveform data for the thermal sensor that may deviate from the calibration waveform data, updating the calibration waveform data to include the real-time waveform data, repeating obtaining real-time waveform data and updating the calibration waveform data during writing operations. By updating the calibration waveform data, the bandwidth of the thermal sensor is determined by a fixed sampling time interval, and the thermal sensor rise time to steady state would not be a limitation to its response time.
-
公开(公告)号：US20160125898A1
公开(公告)日：2016-05-05
申请号：US14533027
申请日：2014-11-04
Applicant: HGST Netherlands B.V.
Inventor： Shen Ren , Erhard Schreck , Matteo Staffaroni , Barry C. Stipe
CPC classification number: G11B5/314 , G11B5/6088 , G11B2005/0021 , G11B2005/0024
Abstract: A method for annealing a metal antenna of a near field optical transducer of a magnetic write element without inadvertently heat damaging the read element. A heating element is placed within a write head build in a cerf region outside of the active area of the read and write heads. A layer of thermally conductive, electrically insulating material is formed over the heating element to separate the heating element from the antenna. The thermally conductive, electrically insulating layer is preferably in contact with the antenna. A current can be applied to the heating element to heat the antenna to a temperature that is at or above the operating temperature of the optical transducer. After annealing, the heater element can be removed by the lapping process that is used to define the media facing surface of the head.
Abstract translation: 一种用于退磁磁写入元件的近场光学换能器的金属天线的方法，而不会无意地热损坏读取元件。 加热元件放置在读写头的有效区域外部的区域内的写入头构建中。 在加热元件上形成导热电绝缘材料层，以将加热元件与天线分开。 导热电绝缘层优选地与天线接触。 可以将电流施加到加热元件以将天线加热到等于或高于光学换能器的工作温度的温度。 在退火之后，加热元件可以通过研磨工艺来去除，该研磨工艺用于限定头部与介质相对的表面。
-
-
-
-
-
-
-
-
-
Search Results
15
records
(took 0.014 seconds)
