公开(公告)号：US20160247525A1

公开(公告)日：2016-08-25

申请号：US14626206

申请日：2015-02-19

Applicant: Seagate Technology LLC

Inventor： Tae-Woo Lee ,  Yi-Kuei Ryan Wu ,  Pierre Asselin ,  Werner Scholz

IPC: G11B5/48

CPC classification number: G11B5/6088 ,  G02B6/1228 ,  G02B6/136 ,  G11B5/314 ,  G11B2005/0021

Abstract: An apparatus includes a write head comprising a near-field transducer at a media-facing surface of the write head and a waveguide extending along a light-propagation direction. The waveguide is configured to receive light emitted from a light source at a fundamental transverse electric mode. The waveguide is configured to deliver the light to the near-field transducer at a transverse magnetic mode which directs surface plasmons to a recording medium in response thereto. The waveguide comprises a core with first and second tapers separated by a straight portion of constant cross sectional width. The first and second tapers successively decrease a cross-sectional width of the core as it nears the near-field transducer. The waveguide includes an end portion between the second taper and the near field transducer. The end portion comprises a top cladding layer, aside cladding layer, and a bottom cladding layer on the side cladding layer.

Abstract translation: 一种装置包括写头，该写头包括在写头的面向介质表面的近场换能器和沿着光传播方向延伸的波导。 波导被配置为在基本横向电模式下接收从光源发射的光。 波导被配置为以横向磁性模式将光传送到近场换能器，该横向磁模式将表面等离子体激元响应于该等离子体质子传导到记录介质。 波导包括具有由恒定横截面宽度的直线部分分开的第一和第二锥形的芯。 当靠近近场换能器时，第一和第二锥度依次降低了芯的横截面宽度。 波导包括在第二锥形和近场换能器之间的端部。 所述端部包括在所述侧包层上的顶部包覆层，旁边包层和下部包层。

公开(公告)号：US09396749B2

公开(公告)日：2016-07-19

申请号：US14691204

申请日：2015-04-20

Applicant: Seagate Technology LLC

Inventor： Pierre Asselin ,  Ruoxi Yang ,  James Gary Wessel

IPC: G11B11/00 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00 ,  G11B11/105

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

Abstract: An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. A waveguide has a core layer extending from an energy source to the media-facing surface. The core layer includes a region of reduced downtrack thickness proximate the near-field transducer. The region of reduced downtrack thickness is defined by a notch facing away from the near-field transducer. A material of the notch has a different index of refraction than an index of refraction of the core layer.

Abstract translation: 一种装置包括靠近记录头的面向媒体的表面的写入磁极。 近场换能器与写柱相邻。 波导具有从能量源延伸到面向介质的表面的芯层。 核心层包括靠近近场换能器的减小的压缩厚度的区域。 减少下行横截面厚度的区域由远离近场传感器的凹口限定。 凹口的材料具有与芯层的折射率不同的折射率。

公开(公告)号：US09946016B2

公开(公告)日：2018-04-17

申请号：US14863117

申请日：2015-09-23

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Pierre Asselin ,  Lien Lee ,  Karen V. Rud

IPC: G02B6/12 ,  G02B6/122 ,  G11B5/60 ,  G11B5/00 ,  G11B5/31

CPC classification number: G02B6/12002 ,  G02B6/1228 ,  G02B2006/12092 ,  G02B2006/12147 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus includes a waveguide extending along a light-propagation direction between a light source and a media-facing surface. The waveguide comprises an assistant layer configured to receive light from a light source, truncated with an intermediate bottom cladding layer. A core layer comprises a coupling end configured to receive light from the assistant layer. The coupling end comprises a taper that widens toward the media-facing surface. A near field transducer is disposed proximate the media-facing surface and is configured to receive the light from the core layer.

公开(公告)号：US09558764B2

公开(公告)日：2017-01-31

申请号：US14886240

申请日：2015-10-19

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  Pierre Asselin ,  Yongjun Zhao ,  James Gary Wessel ,  Tae-Woo Lee ,  Werner Scholz ,  Frank Edgar Stageberg

IPC: G11B11/00 ,  G11B5/187 ,  G11B5/60 ,  G02B6/122 ,  G11B5/31 ,  G11B5/00 ,  G11B11/105

CPC classification number: G11B5/1871 ,  G02B6/122 ,  G02B6/1228 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/10554 ,  G11B2005/0021

Abstract: A write head includes a near-field transducer near a media-facing surface of the write head. The write head includes a waveguide having a core with a first side disposed proximate to the near-field transducer. The core overlaps the near-field transducer at a substrate-parallel plane. The core includes one of a step or a taper on a second side facing away from the first side. The step or the taper causes a reduced thickness of the core normal to the substrate-parallel plane. The write head includes a cladding layer that encompassing the second side of the core and that fills in the step or the taper.

Abstract translation: 写头包括靠近写入头的面向媒体的表面附近的近场换能器。 写头包括具有芯的波导，第一侧靠近近场换能器设置。 核心在基板平行平面处与近场换能器重叠。 芯部包括在远离第一侧的第二侧上的台阶或锥形中的一个。 台阶或锥形导致芯垂直于基板平行平面的芯的厚度减小。 写头包括包围芯的第二侧并且填充在台阶或锥形中的包覆层。

公开(公告)号：US11443765B2

公开(公告)日：2022-09-13

申请号：US17221945

申请日：2021-04-05

Applicant: Seagate Technology LLC

Inventor： Reyad Mehfuz ,  Aidan Dominic Goggin ,  Pierre Asselin ,  Christopher Neil Harvey

IPC: G11B5/48 ,  G11B5/31 ,  G11B5/60 ,  G02B6/122 ,  G11B5/00

Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.

公开(公告)号：US09449627B2

公开(公告)日：2016-09-20

申请号：US14955373

申请日：2015-12-01

Applicant: Seagate Technology LLC

Inventor： Lina Cao ,  Chubing Peng ,  Werner Scholz ,  Pierre Asselin ,  Tae-Woo Lee

IPC: G11B11/00 ,  G11B7/135 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G02B6/122 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus has an input surface configured to receive energy emitted from an energy source in a first mode. A mode order converter is configured to convert the energy from the first mode to a second mode. The waveguide of the apparatus has an input end disposed proximate the input surface and configured to receive the energy in the first mode. The waveguide has an output end disposed proximate a media-facing surface and configured to deliver energy in the second mode. The output end is at an oblique angle to a cross-track line at an intersection of the media-facing surface and a substrate-parallel plane.

Abstract translation: 一种装置具有被配置为在第一模式中从能量源发射的能量的输入表面。 模式顺序转换器被配置为将来自第一模式的能量转换为第二模式。 设备的波导具有设置在输入表面附近并被配置为在第一模式中接收能量的输入端。 波导具有靠近面向介质的表面设置的输出端，并且被配置为在第二模式中传递能量。 输出端与介质相对表面和基板平行平面的交叉点处的交叉轨道线成倾斜角。

公开(公告)号：US09218836B2

公开(公告)日：2015-12-22

申请号：US14525289

申请日：2014-10-28

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Amit Vasant Itagi ,  Pierre Asselin ,  Frank Edgar Stageberg ,  Werner Scholz

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: Systems that include an energy source configured to provide transverse electric (TE) mode energy; a channel waveguide configured to receive energy from the energy source, the channel waveguide having at least one mirror plane; and a near field transducer (NFT) configured to receive energy from the channel waveguide, the NFT having at least one mirror plane.

Abstract translation: 包括配置成提供横向电（TE）模式能量的能量源的系统; 沟道波导，其被配置为从能量源接收能量，所述沟道波导具有至少一个镜面; 以及被配置为从所述通道波导接收能量的近场换能器（NFT），所述NFT具有至少一个反射镜平面。

公开(公告)号：US20150364899A1

公开(公告)日：2015-12-17

申请号：US14619745

申请日：2015-02-11

Applicant: Seagate Technology LLC

Inventor： Karim Tatah ,  Pierre Asselin

IPC: H01S5/14 ,  H01S3/08 ,  H01S5/028

CPC classification number: H01S5/141 ,  G11B5/6088 ,  G11B2005/0021 ,  H01S3/08009 ,  H01S5/005 ,  H01S5/0287

Abstract: A Bragg grating external cavity laser apparatus may comprise the combination of a slider and an external cavity laser. The slider includes a waveguide that delivers light to a recording media. The external cavity laser includes an active region with a reflective back facet and a front facet that is externally coupled to the waveguide of the slider. The external cavity laser additionally includes a Bragg grating within the waveguide of the slider where the reflective back facet and the Bragg grating operate to define a single resonator within the external cavity.

Abstract translation: 布拉格光栅外腔激光装置可以包括滑块和外腔激光器的组合。 滑块包括将光传送到记录介质的波导。 外腔激光器包括具有反射背面的有源区和外部耦合到滑块的波导的前小面。 外腔激光器还包括在滑块的波导内的布拉格光栅，其中反射背面和布拉格光栅操作以在外腔内限定单个谐振器。

公开(公告)号：US20150248901A1

公开(公告)日：2015-09-03

申请号：US14525286

申请日：2014-10-28

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Amit Vasant Itagi ,  Sethuraman Jayashankar ,  Pierre Asselin ,  Werner Scholz

IPC: G11B5/31

CPC classification number: G11B5/314 ,  G02B6/0008 ,  G02B2006/0098 ,  G11B2005/0021

Abstract: An apparatus that includes a near field transducer (NFT), the NFT including, amongst other elements and materials: tantalum (Ta), niobium (Nb), molybdenum (Mo), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), yttrium (Y), hafnium (Hf), platinum (Pt), palladium (Pd), vanadium (V), chromium (Cr), iridium (Ir), scandium (Sc), niobium (Ni), cobalt (Co), rhenium (Re), silicon (Si), geranium (Ge), alloys thereof, dispersions containing these elements, intermetallics based on these elements, admixtures thereof, or combinations thereof.

Abstract translation: 一种包括近场换能器（NFT）的装置，其中包括钽（Ta），铌（Nb），钼（Mo），铑（Rh），钌（Ru），锇（Os） ），钛（Ti），锆（Zr），钇（Y），铪（Hf），铂（Pt），钯（Pd），钒（V），铬（Cr），铱（Ir） ），铌（Ni），钴（Co），铼（Re），硅（Si），天竺葵（Ge），其合金，含有这些元素的分散体，基于这些元素的金属间化合物，其混合物或其组合。

公开(公告)号：US08873352B1

公开(公告)日：2014-10-28

申请号：US14206683

申请日：2014-03-12

Applicant: Seagate Technology LLC

Inventor： Zoran Jandric ,  Chris Rea ,  Pierre Asselin ,  Michael Thomas Johnson ,  Manuel Charles Anaya-Dufresne ,  John C. Duda

IPC: G11B11/00

CPC classification number: G11B5/6088 ,  G11B5/3133 ,  G11B5/314 ,  G11B2005/0021

Abstract: An apparatus has a near-field transducer located proximate a media-facing surface of a slider magnetic recording heat. A waveguide is configured to couple light to the near-field transducer and includes a top cladding layer facing the near-field transducer, a bottom cladding layer, and a core layer between the top and bottom cladding layers. The apparatus includes a write pole with a flat portion substantially parallel to the core layer and a sloped portion extending from the flat portion of the write pole towards the media-facing surface at an angle to the core layer and to the media-facing surface. A light mitigation layer is located between the top cladding layer and the write pole.

Abstract translation: 一种装置具有靠近滑块磁记录热的面向介质表面的近场换能器。 波导被配置为将光耦合到近场换能器并且包括面向近场换能器的顶部覆层，底部包层以及在顶部和底部包层之间的芯层。 该装置包括具有基本上平行于芯层的平坦部分的写入极和从写入极的平坦部分朝着与介质相对的表面以与芯层成一定角度延伸到介质面向表面的倾斜部分。 光缓解层位于顶包层和写柱之间。