公开(公告)号：US20070230047A1

公开(公告)日：2007-10-04

申请号：US11398144

申请日：2006-04-04

申请人： Xuhui Jin ,  Chie Poon ,  Timothy Strand ,  Henry Yang

发明人： Xuhui Jin ,  Chie Poon ,  Timothy Strand ,  Henry Yang

IPC分类号： G11B5/147

CPC分类号： G11B5/314 ,  G11B2005/0021

摘要： The media heating device of the magnetic head includes an optical resonant cavity produces a high intensity near-field optical beam of subwavelength dimension adjacent to the write pole. A suitable resonant cavity may be a spherical cavity, disk shaped cavity, ring shaped cavity, racetrack shaped cavity, micropillar cavity, photonic crystal cavity and Fabry-Perot cavity. The cavity is fabricated as a planar thin film structure in layers that are generally parallel to the magnetic pole thin film layers of the magnetic head, such that the principal axis of the resonant cavity is parallel to the air bearing surface (ABS). Optical energy is coupled into the resonant cavity through a waveguide that is placed proximate the cavity, and optical energy is coupled out of the cavity through an aperture that is placed within the cavity. A preferred embodiment may include a nano-aperture disposed between the resonant cavity and the ABS.

摘要翻译： 磁头的介质加热装置包括光学谐振腔，产生与写入极相邻的亚波长尺寸的高强度近场光束。 合适的谐振腔可以是球形腔，盘形腔，环形空腔，跑道形空腔，微腔，光子晶体腔和法布里 - 珀罗腔。 空腔被制造为平面薄膜结构，其平行于磁头的磁极薄膜层，使得谐振腔的主轴平行于空气轴承表面（ABS）。 光能通过放置在腔附近的波导耦合到谐振腔中，并且光能通过放置在空腔内的孔耦合到空腔外。 优选实施例可以包括设置在谐振腔和ABS之间的纳米孔。

公开(公告)号：US08630152B2

公开(公告)日：2014-01-14

申请号：US12802082

申请日：2010-05-28

申请人： Xuhui Jin ,  Joe Smyth ,  Moris Dovek

发明人： Xuhui Jin ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B11/00

CPC分类号： G11B5/1278 ,  G11B5/314 ,  G11B2005/001 ,  G11B2005/0021

摘要： A device for implementing thermally assisted magnetic recording, using a TE mode laser diode, and method for using it, are described. This device is shaped internally so as to provide three-dimensional self-focusing of plasmon radiation, thereby improving the coupling efficiency between the optical wave-guide and the plasmon generator as a result of ensuring a large overlap between these two modes.

摘要翻译： 描述了使用TE模式激光二极管实现热辅助磁记录的装置及其使用方法。 该装置在内部成形，以提供等离子体激元辐射的三维自聚焦，从而通过确保这两种模式之间的大的重叠而提高光波导和等离子体发生器之间的耦合效率。

公开(公告)号：US20130148485A1

公开(公告)日：2013-06-13

申请号：US13316989

申请日：2011-12-12

申请人： Xuhui Jin ,  Tobias Maletzky ,  Suping Song ,  Dayu Zhou ,  Joe Smyth ,  Moris Dovek

发明人： Xuhui Jin ,  Tobias Maletzky ,  Suping Song ,  Dayu Zhou ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B13/04 ,  G11B7/1387

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a scalable planar plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The planar plasmon generator is formed as a multi-layered structure in which one planar layer supports a propagating surface plasmon mode that is excited by evanescent coupling to an optical mode in an adjacent waveguide. A peg, which can be a free-standing element or an integral projection from one of the layers, is positioned between the ABS end of the generator and the surface of the recording medium, confines and concentrates the near field of the plasmon mode immediately around and beneath it.

摘要翻译： TAMR（热辅助磁记录）写头使用可扩展的平面等离子体发生器中的光激光激发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。 平面等离子体发生器形成为多层结构，其中一个平面层支持通过在相邻波导中的光学模式的渐逝耦合而被激发的传播表面等离子体模式。 可以是独立元件或从其中一层的整体突起的钉定位在发生器的ABS端和记录介质的表面之间，将等离子体激元模式的近场限制并集中在周围 在它下面。

公开(公告)号：US20120279051A1

公开(公告)日：2012-11-08

申请号：US13551670

申请日：2012-07-18

申请人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

发明人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser generated edge plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The method incorporates forming a magnetic core within the plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by the edge plasmons generated in the conducting layer of the antenna surrounding the antenna's magnetic core.

摘要翻译： 一种形成TAMR（热辅助磁记录）写头的方法，其使用等离子体激元中的激光产生的边缘等离子体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。 该方法包括在等离子体激元天线内形成磁芯，因此天线有效地成为磁极的延伸，并产生磁场，其最大梯度与被天线周围的天线导电层中产生的边缘等离子体激发加热的区域重叠 天线的磁芯。

公开(公告)号：US20120263024A1

公开(公告)日：2012-10-18

申请号：US13066420

申请日：2011-04-14

申请人： Xuhui Jin ,  Yuchen Zhou ,  Kenichi Takano ,  Joe Smyth

发明人： Xuhui Jin ,  Yuchen Zhou ,  Kenichi Takano ,  Joe Smyth

IPC分类号： G11B13/04 ,  G11B5/127 ,  G11B7/22 ,  B82Y40/00 ,  B82Y10/00

CPC分类号： G11B5/84 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/314 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) writer has a narrow pole tip with a trailing edge magnetic 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 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）写入器具有带有后缘磁屏蔽的窄极端。 窄极尖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。

公开(公告)号：US20120155232A1

公开(公告)日：2012-06-21

申请号：US12928678

申请日：2010-12-16

申请人： Erhard Schreck ,  Tobias Maletzky ,  Xuhui Jin ,  Yuchun Zhou ,  Kenichi Takano ,  Joe Smyth

发明人： Erhard Schreck ,  Tobias Maletzky ,  Xuhui Jin ,  Yuchun Zhou ,  Kenichi Takano ,  Joe Smyth

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G02B6/125 ,  G02B6/2821 ,  G11B5/3189 ,  G11B2005/001 ,  G11B2005/0021

摘要： A waveguide structure for a TAMR head is disclosed wherein at least one detection waveguide is formed parallel to a main waveguide and located a gap distance therefrom. A light source transmits light into the main waveguide and towards an ABS/medium interface. A plasmon generator converts light from the waveguide into plasmon waves that are directed onto a magnetic medium. Back reflected light is captured by the main waveguide, partially diverted into a detection waveguide, and transmitted to a photo detector that measures light intensity (IB) which correlates closely to the plasmon wave intensity at the ABS/medium interface. A controller linked to the photo detector is employed to calculate IB as a function of ABS/medium spacing in a non-write condition and this relationship can be used to control and maintain a constant plasmon wave intensity at the ABS during a series of TAMR write processes with a plurality of media.

公开(公告)号：US08179628B2

公开(公告)日：2012-05-15

申请号：US12803874

申请日：2010-07-08

申请人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

发明人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

IPC分类号： G11B5/02 ,  G11B11/00

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of the magnetic recording field should be at a point of the magnetic medium that is as close as possible to the point being heated. In addition, the coupling between the optical mode and the plasmon mode should be efficient so that maximum energy is transmitted to the medium. The present invention achieves both these objects by surrounding the magnetic core of a plasmon antenna by a variable thickness plasmon generating layer, whose thinnest and shortest portion is at the ABS end of the TAMR head and whose thickest and longest portion efficiently couples to the optical mode of a waveguide to produce a plasmon.

公开(公告)号：US20120008229A1

公开(公告)日：2012-01-12

申请号：US12803874

申请日：2010-07-08

申请人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

发明人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

IPC分类号： G11B5/02 ,  G11B5/127

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of the magnetic recording field should be at a point of the magnetic medium that is as close as possible to the point being heated. In addition, the coupling between the optical mode and the plasmon mode should be efficient so that maximum energy is transmitted to the medium. The present invention achieves both these objects by surrounding the magnetic core of a plasmon antenna by a variable thickness plasmon generating layer, whose thinnest and shortest portion is at the ABS end of the TAMR head and whose thickest and longest portion efficiently couples to the optical mode of a waveguide to produce a plasmon.

摘要翻译： TAMR（热辅助磁记录）写头使用磁芯等离子体天线中的激光产生的等离子体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。 为了使TAMR头能够最有效地运行，磁记录场的最大梯度和值应当在尽可能接近被加热点的磁介质的一个点处。 另外，光模式和等离子体激元模式之间的耦合应该是有效的，从而将最大能量传输到介质。 本发明通过可变厚度等离子体发生层围绕等离子体激元天线的磁芯来实现这两个目的，其最薄和最短部分在TAMR头的ABS端，并且其最厚和最长部分有效地耦合到光学模式 的波导产生等离子体激元。

公开(公告)号：US20110181979A1

公开(公告)日：2011-07-28

申请号：US12657637

申请日：2010-01-25

申请人： Xuhui Jin ,  Kenichi Takano ,  Yuchen Zhou ,  Erhard Schreck ,  Joe Smyth ,  Moris Dovek

发明人： Xuhui Jin ,  Kenichi Takano ,  Yuchen Zhou ,  Erhard Schreck ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the antenna is formed in three portions, a wide portion of uniform horizontal area, a tapered portion tapering towards the ABS of the write head and a narrow tip extending from the tapered portion to the ABS. The wide portion enhances coupling of optical radiation from a waveguide to surface plasmons generated within the generator, the tapered portion condenses and focuses the plasmons as they propagate towards the ABS and the narrow tip further focuses the surface plasmon field at the medium surface.

摘要翻译： TAMR（热辅助磁记录）写头使用等离子体发生器中的光学激光器产生的等离子体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。 为了使TAMR头能够最有效地工作，天线形成为三个部分，宽度均匀的水平区域，朝向写入头的ABS渐缩的锥形部分和从锥形部分延伸到ABS的窄尖端。 宽部分增强了来自波导的光辐射与在发生器内产生的表面等离子体激元的耦合，锥形部分在等离子体激元朝向ABS传播时冷凝并聚焦等离子体，并且窄尖端进一步将中等表面的表面等离子体场聚焦。

公开(公告)号：US07961417B2

公开(公告)日：2011-06-14

申请号：US12371988

申请日：2009-02-17

申请人： Michael Allen Seigler ,  Xuhui Jin ,  Hua Zhou

发明人： Michael Allen Seigler ,  Xuhui Jin ,  Hua Zhou

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  G11B2005/001 ,  G11B2005/0021

摘要： An apparatus includes a recording media including a substrate, a plurality of islands of magnetic material on the substrate, and a non-magnetic material between the islands, a recording head having an air bearing surface positioned adjacent to the recording media, and including a magnetic pole, and an optical transducer, wherein the optical transducer directs electromagnetic radiation onto recording media to heat portions of the recording media and a magnetic field from the magnetic pole is used to set the direction of the magnetization in the heated portions of the recording media, and a plurality of near-field transducers, each positioned adjacent to one of the islands to increase coupling between the electromagnetic radiation and the magnetic material.

摘要翻译： 一种装置包括：记录介质，包括基板，多个基板上的磁性材料岛，以及岛之间的非磁性材料;记录头，具有邻近记录介质定位的空气轴承表面， 极和光学换能器，其中光学传感器将电磁辐射引导到记录介质上以加热记录介质的部分，并且使用来自磁极的磁场来设定记录介质的加热部分中的磁化方向， 以及多个近场换能器，每个靠近所述岛中的一个以增加所述电磁辐射与所述磁性材料之间的耦合。