Invention Grant
- Patent Title: Thermally-assisted magnetic recording head with optically isolating waveguide, head gimbal assembly, head arm assembly, magnetic disk unit, and light transmission unit
- Patent Title (中): 热辅助磁记录头，具有光学隔离波导，头万向架组件，头臂组件，磁盘单元和光传输单元
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Application No.: US13426142Application Date: 2012-03-21
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Publication No.: US08654617B2Publication Date: 2014-02-18
- Inventor: Eiji Komura , Tsutomu Chou , Koji Shimazawa , Shinji Hara , Ryo Hosoi , Nobuyuki Mori , Yasutoshi Fujita , Hideki Tanzawa
- Applicant: Eiji Komura , Tsutomu Chou , Koji Shimazawa , Shinji Hara , Ryo Hosoi , Nobuyuki Mori , Yasutoshi Fujita , Hideki Tanzawa
- Applicant Address: JP Tokyo CN Hong Kong
- Assignee: TDK Corporation,Sae Magnetics (H.K.) Ltd.
- Current Assignee: TDK Corporation,Sae Magnetics (H.K.) Ltd.
- Current Assignee Address: JP Tokyo CN Hong Kong
- Agency: Oliff PLC
- Main IPC: G11B11/00
- IPC: G11B11/00
Abstract:
The thermally-assisted magnetic recording head includes: a laser light source having an emission surface, the emission surface allowing laser light to be emitted therefrom; a waveguide having a core and a cladding, the core allowing the laser light emitted from the laser light source to propagate therethrough, and the cladding surrounding the core; a magnetic pole; and a plasmon generator. Each of the core and the cladding has an end surface facing the emission surface, and the end surface of the cladding suppresses returning of the laser light to the laser light source.
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