公开(公告)号：US11443764B1

公开(公告)日：2022-09-13

申请号：US16291491

申请日：2019-03-04

Applicant: Seagate Technology LLC

Inventor： Choon How Gan ,  Mark Anthony Gubbins ,  Beverley Rutherford McConnell ,  Martin Peter McCurry ,  Michael James Hardy ,  Andres David Barbosa Neira ,  Fadi El Hallak ,  Anil Kumar Puri

IPC: G11B5/48 ,  G11B5/31 ,  G02B6/122 ,  G11B13/08 ,  G11B5/00

Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. The slider includes an input coupler configured to receive light excited by a light source. The slider includes a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width, the waveguide configured to provide a surface plasmon-enhanced near-field radiation pattern proximate an output end in response to the received light. One or more cladding layers surround the waveguide core. At least one strip of plasmonic material is disposed between the waveguide core and at least one of the one or more cladding layers.

公开(公告)号：US09960570B1

公开(公告)日：2018-05-01

申请号：US15601024

申请日：2017-05-22

Applicant: Seagate Technology LLC

Inventor： Aidan Dominic Goggin ,  Mark Anthony Gubbins ,  Michael James Hardy ,  Kelly Elizabeth Hamilton

IPC: G11B11/00 ,  H01S5/14 ,  H01S5/042 ,  G11B5/48 ,  G11B5/00 ,  G11B7/126 ,  G11B5/60

CPC classification number: H01S5/14 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/126 ,  G11B2005/0021 ,  H01S3/08045 ,  H01S3/0805 ,  H01S3/08068

Abstract: A slider includes a slot waveguide configured to receive energy from an input surface. The slot waveguide has first and second high-index regions surrounding a middle region that extends along a light propagation direction. The middle region has a refractive index less than that of the first and second high index regions. A near-field transducer is at an output portion of the middle region at media-facing surface. The near-field transducer has first and second plates parallel to the media-facing surface with a gap therebetween. An active laser region has a front facet optically coupled to the input surface of the slider. A reflective back facet of the laser and the near-field transducer define a single optical resonator.

公开(公告)号：US10127935B2

公开(公告)日：2018-11-13

申请号：US15784479

申请日：2017-10-16

Applicant: Seagate Technology LLC

Inventor： Roberto Fernandez Garcia ,  Andres David Barbosa Neira ,  Michael James Hardy ,  Mark Anthony Gubbins

IPC: G11B5/02 ,  G11B5/48 ,  G02B6/122 ,  G11B13/08 ,  G02B6/12 ,  G11B5/00

Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. An input coupler of the slider is configured to-receive light produced by a light source. A waveguide of the slider comprises a waveguide core tapering from a first portion having a first cross sectional width to a second portion having a second cross sectional width along the light propagation direction. The second cross sectional width being smaller than the first cross sectional width, and the second portion having an output end. The waveguide includes at least one cladding layer comprising a metallic material. The at least one cladding layer surrounds at least the core. The at least one cladding layer is configured to sink heat away from the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received at the transducer region.

公开(公告)号：US10115423B1

公开(公告)日：2018-10-30

申请号：US15723410

申请日：2017-10-03

Applicant: Seagate Technology LLC

Inventor： Mark Anthony Gubbins ,  Choon How Gan ,  Roberto Fernandez Garcia ,  Michael James Hardy ,  Andres David Barbosa Neira

IPC: G11B11/00 ,  G11B5/60 ,  G11B5/00 ,  G11B5/48

Abstract: A near-field transducer has an enlarged portion with a peg extending towards a media-facing surface. Two reflectors are located co-planar with near-field transducer and located on either side of the near-field transducer in a crosstrack direction. The two reflectors are separated by a gap proximate the peg of the near-field transducer. The two reflectors each include a first edge at the media facing surface and a second edge at an acute angle to the media-facing surface. The second edge faces the near-field transducer. The two reflectors concentrate the light on the peg of the near-field transducer.

公开(公告)号：US10403313B1

公开(公告)日：2019-09-03

申请号：US15991010

申请日：2018-05-29

Applicant: Seagate Technology LLC

Inventor： Choon How Gan ,  Mark Anthony Gubbins ,  Roberto Fernandez Garcia ,  Michael James Hardy ,  Andres David Barbosa Neira ,  Yuhang Cheng ,  Weibin Chen

IPC: G11B11/105 ,  G11B5/48 ,  G11B13/08 ,  G02B6/122 ,  G11B5/31 ,  G11B5/00

Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. The slider comprises an input coupler configured to receive light excited by a light source and a waveguide. The waveguide comprises a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width. The second cross sectional width is smaller than the first cross sectional width. The waveguide core comprises a trench at an output end. The waveguide comprises at least one cladding layer surrounding the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the received light.

公开(公告)号：US09934800B1

公开(公告)日：2018-04-03

申请号：US15435583

申请日：2017-02-17

Applicant: Seagate Technology LLC

Inventor： Andres David Barbosa Neira ,  Roberto Fernandez Garcia ,  Michael James Hardy ,  Mark Anthony Gubbins ,  Martin Giles Blaber

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00 ,  G11B5/60 ,  G11B11/105 ,  G11B7/126

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B7/126 ,  G11B11/10506 ,  G11B11/1051 ,  G11B2005/0021

Abstract: A waveguide has a first cladding layer surrounding a near-field transducer. A core of the waveguide is disposed on the first cladding layer, and a second cladding layer is disposed on the core opposite the first cladding layer. A coupler is formed of a second plasmonic material and disposed in the waveguide such that a first edge of the coupler is proximate a media-facing surface and a first side of the coupler faces and is spaced apart from a peg of the near-field transducer in a downtrack direction.

公开(公告)号：US10403310B1

公开(公告)日：2019-09-03

申请号：US16036155

申请日：2018-07-16

Applicant: Seagate Technology LLC

Inventor： Andres David Barbosa Neira ,  Roberto Fernandez Garcia ,  Michael James Hardy ,  Choon How Gan ,  Mark Anthony Gubbins ,  Florin Zavaliche ,  Tong Zhao ,  Martin Giles Blaber

IPC: G11B11/105 ,  G11B5/187 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording. A near-field transducer comprising a peg is situated at or near an air bearing surface of the slider, and an optical waveguide of the slider is configured to couple light from a light source to the near-field transducer. The peg comprises a hyperbolic metamaterial, and the near-field transducer may further include an enlarged portion from which the peg extends, where the enlarged portion may also comprise a hyperbolic metamaterial.

公开(公告)号：US10026421B1

公开(公告)日：2018-07-17

申请号：US15437995

申请日：2017-02-21

Applicant: Seagate Technology LLC

Inventor： Andres David Barbosa Neira ,  Roberto Fernandez Garcia ,  Michael James Hardy ,  Choon How Gan ,  Mark Anthony Gubbins ,  Florin Zavaliche ,  Tong Zhao ,  Martin Giles Blaber

IPC: G11B11/00 ,  G11B5/187 ,  G11B5/48 ,  G11B5/00 ,  G11B5/60

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording. A near-field transducer comprising a peg is situated at or near an air bearing surface of the slider, and an optical waveguide of the slider is configured to couple light from a light source to the near-field transducer. The peg comprises a hyperbolic metamaterial, and the near-field transducer may further include an enlarged portion from which the peg extends, where the enlarged portion may also comprise a hyperbolic metamaterial.

公开(公告)号：US10916262B1

公开(公告)日：2021-02-09

申请号：US16725746

申请日：2019-12-23

Applicant: Seagate Technology LLC

Inventor： Muhammed Bilal Janjua ,  Martin Peter McCurry ,  Michael James Hardy ,  Mark Anthony Gubbins

IPC: G11B5/31 ,  C22C9/00 ,  G11B5/00

Abstract: A device including a near field transducer, the near field transducer including a near field transducer, the near field transducer comprising a copper (Cu) alloy of the formula Cu1−zXz, where z ranges from 0.001 to 0.9 and X is selected from aluminum (Al), cobalt (Co), chromium (Cr), erbium (Er), iron (Fe), gold (Au), hafnium (Hf), iridium (Ir), molybdenum (Mo), nickel (Ni), palladium (Pd), platinum (Pt), rhenium (Re), rhodium (Rh), ruthenium (Ru), silicon (Si), tin (Sn), tantalum (Ta), tellurium (Te), titanium (Ti), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or combinations thereof.

公开(公告)号：US10311898B1

公开(公告)日：2019-06-04

申请号：US15391906

申请日：2016-12-28

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Mark Anthony Gubbins ,  Peter Kevin McGeehin ,  Marcus Benedict Mooney ,  Michael James Hardy

IPC: G11B5/00 ,  G11B5/31

Abstract: Devices that include a near field transducer (NFT) the NFT includes a bulk of at least one plasmonic material and at least one sacrificial metal; and a surface layer that includes an oxide of the at least one sacrificial metal.