Invention Grant
US09147415B2 HAMR head spot-size converters with secondary index confinement
有权
具有次级指数限制的HAMR头点光源转换器
- Patent Title: HAMR head spot-size converters with secondary index confinement
- Patent Title (中): 具有次级指数限制的HAMR头点光源转换器
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Application No.: US14136414Application Date: 2013-12-20
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Publication No.: US09147415B2Publication Date: 2015-09-29
- Inventor: Thomas William Clinton , Barry C. Stipe , Juraj Topolancik
- Applicant: HGST Netherlands B.V.
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Patterson & Sheridan, LLP
- Main IPC: G11B11/00
- IPC: G11B11/00 ; G11B5/48 ; G11B5/00
Abstract:
The present invention generally relates to a HAMR head having not only a tapered core for the SSC, but additionally a secondary confinement material in the cladding surrounding the core taper. The secondary confinement material prevents diverging light from the laser diode from spreading so that the light is coupled into the core of the SSC. The secondary confinement material is a symmetric structure that surrounds the core of the SSC on all sides so that high conversion efficiency is achieved for short taper lengths.
Public/Granted literature
- US20150179197A1 HAMR HEAD SPOT-SIZE CONVERTERS WITH SECONDARY INDEX CONFINEMENT Public/Granted day:2015-06-25
Information query
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