Invention Grant
- Patent Title: Thermally assisted recording head having recessed waveguide with near field transducer and methods of making same
- Patent Title (中): 带有近场传感器的凹槽波导的热辅助记录头及其制造方法
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Application No.: US12347084Application Date: 2008-12-31
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Publication No.: US08169881B2Publication Date: 2012-05-01
- Inventor: Hamid Balamane , Thomas Dudley Boone, Jr. , Neil Leslie Robertson , Barry Cushing Stipe , Timothy Carl Strand
- Applicant: Hamid Balamane , Thomas Dudley Boone, Jr. , Neil Leslie Robertson , Barry Cushing Stipe , Timothy Carl Strand
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B7/135
- IPC: G11B7/135

Abstract:
According to one embodiment, an apparatus includes a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers. In another embodiment, a method includes forming a near field transducer structure and removing a portion of the near field transducer structure. The method also includes forming a cladding layer adjacent a remaining portion of the near field transducer structure, wherein a portion of the cladding layer extends along the remaining portion of the near field transducer structure and forming a core layer above the cladding layer. Other apparatuses and methods are also included in the invention.
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