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21. 发明授权

US08953422B1 Near field transducer using dielectric waveguide core with fine ridge feature 有权
标题翻译：近场传感器使用具有细脊特征的介质波导芯
公开(公告)号：US08953422B1
公开(公告)日：2015-02-10
申请号：US14324505
申请日：2014-07-07
申请人： Western Digital (Fremont), LLC
发明人： Jiangrong Cao , Michael V. Morelli , Hongxing Yuan , Peng Zhang , Brad V. Johnson , Matthew R. Gibbons
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00
CPC分类号： G11B5/4866 , G11B5/6088 , G11B2005/0021
摘要： An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores disposed near an air bearing surface of a magnetic recording device. Each waveguide core has a fine ridge feature on a first surface of the waveguide core and configured to receive incident light energy from an energy source. A near field transducer (NFT) is formed at the air bearing surface for focusing light energy received from the waveguide core and transmitting the focused light energy onto the storage disk surface to generate a heating spot. The NFT includes at least one plasmonic metal element disposed above the fine ridge features of the waveguide cores to form an interface for delivering propagating surface plasmon polaritons (PSPPs) to the air bearing surface. Each fine ridge feature is configured with a width approximately equivalent to a width of the heating spot.
摘要翻译：存储盘的能量辅助磁记录装置包括设置在磁记录装置的空气轴承表面附近的多个电介质波导芯。每个波导芯在波导芯的第一表面上具有细脊特征，并且被配置为从能量源接收入射光能。在空气轴承表面上形成近场传感器（NFT），用于聚焦从波导芯接收的光能，并将聚焦的光能传输到存储盘表面上以产生加热点。 NFT包括至少一个等离子体元素金属元件，其设置在波导芯的细脊特征之上，以形成用于将传播表面等离子体激元（PSPP）传送到空气轴承表面的界面。每个细脊特征配置有大致相当于加热点宽度的宽度。

22. 发明授权

US08947985B1 Heat assisted magnetic recording transducers having a recessed pole 有权
标题翻译：具有凹陷极的热辅助磁记录传感器
公开(公告)号：US08947985B1
公开(公告)日：2015-02-03
申请号：US14034487
申请日：2013-09-23
申请人： Western Digital (Fremont), LLC
发明人： Michael V. Morelli , Lisha Wang , Zhigang Bai , Hongxing Yuan , Yunfei Li , Zhanjie Li , Matthew R. Gibbons , Samuel W. Yuan
IPC分类号： G11B11/00 , G11B13/04
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： A heat assisted magnetic recording (HAMR) write transducer has an air-bearing surface (ABS) configured to reside in proximity to a media during use and is coupled with a laser that provides energy. The HAMR transducer includes a main pole, at least one additional pole adjacent to the main pole in a down track direction, a waveguide and at least one coil for energizing the main pole. The main pole is configured to write to a region of the media and is recessed from the ABS by a first distance. The additional pole(s) are recessed from the ABS by a second distance greater than the first distance. The waveguide is optically coupled with the laser and directs a portion of the energy toward the ABS at an acute angle from the ABS. A portion of the waveguide resides between the additional pole(s) and the ABS.
摘要翻译：热辅助磁记录（HAMR）写传感器具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS），并且与提供能量的激光器耦合。 HAMR传感器包括主极，沿着向下轨道方向与主极相邻的至少一个附加极，波导和用于激励主极的至少一个线圈。主极被配置为写入介质的区域并且从ABS凹入第一距离。附加的杆从ABS凹入大于第一距离的第二距离。波导与激光器光学耦合，并将一部分能量从ABS引导到ABS。波导的一部分位于附加极和ABS之间。

23. 发明授权

US08681594B1 Method and system for improving laser alignment and optical transmission efficiency of an energy assisted magnetic recording head 有权
标题翻译：用于提高能量辅助磁记录头的激光对准和光传输效率的方法和系统
公开(公告)号：US08681594B1
公开(公告)日：2014-03-25
申请号：US13631641
申请日：2012-09-28
申请人： Western Digital (Fremont), LLC
发明人： Zhong Shi , Arkadi B. Goulakov , Alexandre V. Demtchouk , Lei Wang , Michael V. Morelli
IPC分类号： G11B7/00
CPC分类号： G11B5/6088 , G11B2005/0021
摘要： An EAMR disk drive includes a media, a laser, and a slider coupled with the laser. The laser for provides energy. The slider has an air-bearing surface, a laser input side, an EAMR transducer and an antireflective coating (ARC) layer occupying a portion of the laser input side. The ARC layer is configured to reduce back reflections of the energy. The EAMR transducer includes a write pole, a waveguide optically coupled with the laser and at least one coil. The waveguide has a waveguide input. A portion of the ARC layer resides between the laser and the waveguide input. A method aligns the laser to the ARC layer, and then aligns the laser to the waveguide input. The laser may then be coupled to the slider.
摘要翻译： EAMR磁盘驱动器包括介质，激光器和与激光器耦合的滑块。激光提供能量。滑块具有空气轴承表面，激光输入侧，EAMR传感器和占据激光输入侧的一部分的抗反射涂层（ARC）层。 ARC层被配置为减少能量的反射。 EAMR传感器包括写入极，与激光器光学耦合的波导和至少一个线圈。波导具有波导输入。 ARC层的一部分位于激光器和波导输入之间。一种方法将激光对准ARC层，然后将激光对准波导输入。然后可以将激光器耦合到滑块。

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