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US 8,787,126 B2Granted
Waveguide with blocking layer
AssigneeSeagate Technology LLC
InventorsNils Jan Gokemeijer, William Albert Challener
Life of this patent
Estimating the term…
Abstract
An apparatus includes a write pole, a waveguide adjacent to the write pole, the waveguide having a truncated end, and a blocking layer positioned adjacent the truncated end and extending from one side of the waveguide across a portion of an aperture at the truncated end. The waveguide can be a solid immersion mirror or a channel waveguide.
Claims20
An apparatus comprising:
- a write pole;
- a waveguide adjacent to the write pole, the waveguide having a truncated end and an interior surface that converges optical light to a focal point that is axially centered with respect to an aperture at the truncated end;
- and
- a blocking layer positioned adjacent the truncated end and extending from a single side of the waveguide across a portion of the aperture at the truncated end to output a non-uniform beam from the waveguide.
1 more element
An apparatus comprising:
- a recording medium;
- a recording head comprising a waveguide adjacent to a write pole and an offset blocking layer positioned adjacent a truncated end of the waveguide and extending from only one side of the waveguide across a portion of an aperture at the truncated end that outputs a beam with a flattened, non-uniform cross-sectional shape onto the recording medium;
- and
- a positioning device for positioning the recording head adjacent to the recording medium.
1 more element
An apparatus comprising:
- a write pole adapted to impart a magnetic field to an adjacent recording medium to write data thereto;
- and
- a waveguide adjacent the write pole adapted to impart a flattened, non-circular optical heating beam to the recording medium, the waveguide comprising a non-symmetric opening offset with respect to a central axis of the waveguide along which the beam extends;
- and
- an offset blocking layer positioned adjacent the waveguide, the offset blocking layer extending from only one side of the waveguide across a portion of an aperture provided by the waveguide.
2 more elements
Dependencies are inferred from the claim text.