- 专利标题: Plasmon shield to shape and reduce optical spot
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申请号: US13200478申请日: 2011-09-23
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公开(公告)号: US20120020194A1公开(公告)日: 2012-01-26
- 发明人: Xuhui Jin , Yuchen Zhou , Joe Smyth , Tobias Maletzky , Kenichi Takano , Erhard Schreck
- 申请人: Xuhui Jin , Yuchen Zhou , Joe Smyth , Tobias Maletzky , Kenichi Takano , Erhard Schreck
- 主分类号: G11B13/04
- IPC分类号: G11B13/04
摘要:
A TAMR head is disclosed with a triangular shaped plasmon antenna covered on two sides with a plasmon layer that generates an edge plasmon mode along a vertex of the two plasmon sides formed opposite a main pole layer. A plasmon shield (PS) is formed along the ABS and opposite the vertex to confine an electric field from the edge plasmon mode within a small radius of the edge plasmon tip thereby reducing the optical spot size on the magnetic medium and enhancing writability. An end of a waveguide used to direct input electromagnetic radiation to the plasmon antenna adjoins a PS side opposite the ABS. In one embodiment, a magnetic shield may be formed along the ABS and adjoins the PS so that a first PS section terminates at the ABS and faces the vertex while a second PS section is formed between the magnetic shield and waveguide end.
公开/授权文献
- US08295132B2 Plasmon shield to shape and reduce optical spot 公开/授权日:2012-10-23