公开(公告)号：US11798580B1

公开(公告)日：2023-10-24

申请号：US17809607

申请日：2022-06-29

Applicant: Seagate Technology LLC

Inventor： Nils Jan Gokemeijer ,  James G Wessel ,  Tyler Lenn Perry ,  Joseph M Stephan

IPC: G11B5/00 ,  G11B11/105 ,  G11B5/012 ,  G11B13/08 ,  G11B7/126 ,  G11B5/31 ,  G11B5/60

CPC classification number: G11B5/012 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/126 ,  G11B13/08 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a slider body, a laser, a submount, and a laser heater. The slider body is configured to contain components of the heat-assisted magnetic recording head. The laser is configured to emit electromagnetic radiation. The submount is configured to couple the laser to the slider body. The laser heater is configured to apply heat to the laser. The laser heater disposed on a surface of the slider body.

公开(公告)号：US11120824B1

公开(公告)日：2021-09-14

申请号：US17003355

申请日：2020-08-26

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

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

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording comprising an air bearing surface (ABS). The slider comprises a write pole at or near the ABS, and a near-field transducer (NFT) at or near the ABS and proximate the write pole. A main waveguide is configured to receive light from a laser source and communicate the light to the NFT. An optical power sensor comprises a tap waveguide optically coupled to the main waveguide and comprising a first end and an opposing second end. The optical power sensor also comprises a bolometer optically coupled to the tap waveguide and configured to receive a portion of the light extracted from the main waveguide by the tap waveguide.

公开(公告)号：US11574648B2

公开(公告)日：2023-02-07

申请号：US17400570

申请日：2021-08-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

IPC: G11B5/31 ,  G11B5/48 ,  G11B5/60 ,  G11B5/187 ,  G11B5/00

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording comprising an air bearing surface (ABS). The slider comprises a write pole at or near the ABS, and a near-field transducer (NFT) at or near the ABS and proximate the write pole. A main waveguide is configured to receive light from a laser source and communicate the light to the NFT. An optical power sensor comprises a tap waveguide optically coupled to the main waveguide and comprising a first end and an opposing second end. The optical power sensor also comprises a bolometer optically coupled to the tap waveguide and configured to receive a portion of the light extracted from the main waveguide by the tap waveguide.

公开(公告)号：US20220068301A1

公开(公告)日：2022-03-03

申请号：US17400570

申请日：2021-08-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Vivek Krishnamurthy ,  Nils Jan Gokemeijer

IPC: G11B5/48 ,  G11B5/60

Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording comprising an air bearing surface (ABS). The slider comprises a write pole at or near the ABS, and a near-field transducer (NFT) at or near the ABS and proximate the write pole. A main waveguide is configured to receive light from a laser source and communicate the light to the NFT. An optical power sensor comprises a tap waveguide optically coupled to the main waveguide and comprising a first end and an opposing second end. The optical power sensor also comprises a bolometer optically coupled to the tap waveguide and configured to receive a portion of the light extracted from the main waveguide by the tap waveguide.