公开(公告)号：US11328745B2

公开(公告)日：2022-05-10

申请号：US17362117

申请日：2021-06-29

Applicant: Seagate Technology LLC

Inventor： John Bernard McGurk ,  Reyad Mehfuz ,  Christopher Neil Harvey ,  Aidan Dominic Goggin

IPC: G11B11/105 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B13/04 ,  G02B6/122 ,  G11B5/00

Abstract: An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.

公开(公告)号：US20220101879A1

公开(公告)日：2022-03-31

申请号：US17546855

申请日：2021-12-09

Applicant: Seagate Technology LLC

Inventor： Aidan Dominic Goggin ,  John Moloney ,  Reyad Mehfuz ,  Chuan Zhong ,  Christopher Neil Harvey

IPC: G11B13/08 ,  G11B5/48

Abstract: A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.

公开(公告)号：US10515659B2

公开(公告)日：2019-12-24

申请号：US16113034

申请日：2018-08-27

Applicant: Seagate Technology LLC

Inventor： Christopher Neil Harvey ,  Aidan Dominic Goggin ,  Kelly Elizabeth Hamilton ,  Reyad Mehfuz

IPC: G11B11/105 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00 ,  G11B7/126

Abstract: An apparatus includes a first waveguide core extending along a light-propagation direction and configured to receive light from a light source at a combined transverse electric (TE) mode and a transverse magnetic (TM) mode. A second waveguide core is spaced apart from the first waveguide core and is configured to couple light at a TM mode to the second waveguide core. A near-field transducer (NFT) is disposed at a media-facing surface of a write head, the NFT receiving the light from the first waveguide core or the second waveguide core and heating a magnetic recording medium in response thereto.

公开(公告)号：US10062400B1

公开(公告)日：2018-08-28

申请号：US15658636

申请日：2017-07-25

Applicant: Seagate Technology LLC

Inventor： Christopher Neil Harvey ,  Aidan Dominic Goggin ,  Kelly Elizabeth Hamilton ,  Reyad Mefuz

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

CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/126 ,  G11B2005/0021

Abstract: An apparatus includes a first waveguide core extending along a light-propagation direction and configured to receive light from a light source at a combined transverse electric (TE) mode and a transverse magnetic (TM) mode. A second waveguide core is spaced apart from the first waveguide core and is configured to couple light at a TM mode to the second waveguide core. A near-field transducer (NFT) is disposed at a media-facing surface of a write head, the NFT receiving the light from the first waveguide core or the second waveguide core and heating a magnetic recording medium in response thereto.