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1.发明授权公开(公告)号：US11661788B2
公开(公告)日：2023-05-30
申请号：US17583550
申请日：2022-01-25
Applicant: Seagate Technology LLC
Inventor： Weibin Chen , Nan Zhou , Ruoxi Yang , Michael Allen Siegler
CPC classification number: E06B1/62 , C08L95/005 , E04B1/665 , E04F19/045 , E04F19/0459 , E06B2001/628
Abstract: A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.
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公开(公告)号：US11107497B1
公开(公告)日：2021-08-31
申请号：US16724558
申请日：2019-12-23
Applicant: Seagate Technology LLC
Inventor： Ruoxi Yang , YongJun Zhao , Nan Zhou , Weibin Chen , Huaqing Yin , Michael Allen Seigler
IPC: G11B7/1362 , G11B5/60 , G11B13/08 , G11B5/31 , G11B7/1387 , G11B11/105 , G11B5/00
Abstract: A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.
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公开(公告)号：US10410664B1
公开(公告)日：2019-09-10
申请号：US15939520
申请日：2018-03-29
Applicant: Seagate Technology LLC
Inventor： Yuhang Cheng , Nan Zhou , Yongjun Zhao , Huaqing Yin , Weibin Chen , Michael Allen Seigler
Abstract: A near-field transducer has an enlarged portion with a layer of soft plasmonic material. A peg is embedded in a lower part of the enlarged portion that faces a media-facing surface. The peg has an elongated outer part that extends from a lower edge of the enlarged portion towards the media-facing surface and an embedded part that is embedded within the enlarged portion. The embedded part could be any shape. The peg is formed of a thermally robust plasmonic material.
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4.发明申请公开(公告)号：US20220220795A1
公开(公告)日：2022-07-14
申请号：US17583550
申请日：2022-01-25
Applicant: Seagate Technology LLC
Inventor： Weibin Chen , Nan Zhou , Ruoxi Yang , Michael Allen Siegler
Abstract: A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.
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公开(公告)号：US11373679B1
公开(公告)日：2022-06-28
申请号：US17406352
申请日：2021-08-19
Applicant: Seagate Technology LLC
Inventor： Ruoxi Yang , YongJun Zhao , Nan Zhou , Weibin Chen , Huaqing Yin , Michael Allen Seigler
IPC: G11B7/1387 , G11B5/60 , G11B5/31 , G11B13/08 , G11B7/1362 , G11B11/105 , G11B5/00
Abstract: A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11264053B2
公开(公告)日：2022-03-01
申请号：US17216017
申请日：2021-03-29
Applicant: Seagate Technology LLC
Inventor： Weibin Chen , Nan Zhou , Ruoxi Yang , Michael Allen Seigler
IPC: G11B11/10 , G11B11/105 , G11B5/00 , G11B5/39 , G11B5/48
Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. The near-field transducer extends a first distance away from the media-facing surface. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a liner that covers an edge of the mirror.
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7.发明授权公开(公告)号：US11664051B1
公开(公告)日：2023-05-30
申请号：US17706257
申请日：2022-03-28
Applicant: Seagate Technology LLC
Inventor： Nan Zhou , Michael Allen Seigler , YongJun Zhao , Huaqing Yin , Michael C. Kautzky , Li Wan
CPC classification number: G11B13/08 , G11B2005/0021
Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a core having a first edge exposed at the media-facing surface. The core formed of a core material that is resistant to mechanical wear and corrosion, such as a dielectric or robust metal. A liner covers a second edge of the core facing the near-field transducer. The liner includes a plasmonic metal that is different than the core material, such as Au or Al.
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8.发明授权公开(公告)号：US10964340B1
公开(公告)日：2021-03-30
申请号：US16855047
申请日：2020-04-22
Applicant: Seagate Technology LLC
Inventor： Weibin Chen , Nan Zhou , Ruoxi Yang , Michael Allen Seigler
Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. The near-field transducer extends a first distance away from the media-facing surface. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface; and a second material facing away from the media facing surface and in contact with the first material. The second material includes a plasmonic material, and the first material is more mechanically robust than the second material.
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公开(公告)号：US10832717B1
公开(公告)日：2020-11-10
申请号：US16525918
申请日：2019-07-30
Applicant: Seagate Technology LLC
Inventor： Yuhang Cheng , Nan Zhou , Yongjun Zhao , Huaqing Yin , Weibin Chen , Michael Allen Seigler
Abstract: A near-field transducer has an enlarged portion with a layer of soft plasmonic material. A peg formed of a thermally robust plasmonic material includes an embedded part that is partially embedded within the enlarged portion and has an exposed surface facing away from the enlarged portion. An intersection between a lower edge of the enlarged portion and the embedded part has a discontinuity.
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10.发明申请公开(公告)号：US20210249039A1
公开(公告)日：2021-08-12
申请号：US17216017
申请日：2021-03-29
Applicant: Seagate Technology LLC
Inventor： Weibin Chen , Nan Zhou , Ruoxi Yang , Michael Allen Seigler
Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. The near-field transducer extends a first distance away from the media-facing surface. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a liner that covers an edge of the mirror.
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