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US 12,380,918 B1Granted
Energy-assisted recording head with C-shaped delivery waveguide core
AssigneeSeagate Technology LLC
InventorChubing Peng
Life of this patent
Estimating the term…
Abstract
A recording head includes a near-field transducer proximate a media-facing surface of the recording head. A light delivery waveguide extends from an energy source to the near-field transducer. The light delivery waveguide includes, proximate the near-field transducer, a C-shaped core of a first dielectric material. The C-shaped core has a hollow aligned with the near-field transducer. A cladding of a second dielectric material surrounds the C-shaped core.
Claims19
A recording head, comprising:
- a near-field transducer proximate a media-facing surface of the recording head, the near-field transducer comprising a plate-like, enlarged part with a peg extending from the enlarged part;
- and
- a light delivery waveguide extending from an energy source to the near-field transducer, the light delivery waveguide comprising, proximate the near-field transducer:
- a C-shaped core of a first dielectric material, the C-shaped core having a hollow aligned with the near-field transducer;
- and
- a cladding of a second dielectric material that surrounds the C-shaped core.
3 more elements
A recording head, comprising:
- a near-field transducer proximate a media-facing surface of the recording head, the near-field transducer shaping and directing surface plasmons to a recording medium;
- and
- a light delivery waveguide extending from an energy source to the near-field transducer, the light delivery waveguide comprising a C-shaped core of a first dielectric material, the core having a hollow aligned with and proximate the near-field transducer, the hollow facing away from the near-field transducer, the waveguide further comprising a cladding of a second dielectric material that surrounds the C-shaped core.
Dependencies are inferred from the claim text.