Near-field optical probe, near-field optical microscope and optical recording/reproducing device with near-field optical probe
AssigneeHitachi, Ltd.
InventorsTakuya Matsumoto, Takeshi Shimano, Sumio Hosaka, Fumio Isshiki
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Abstract
A near-field probe includes a metallic scatterer fabricated on a substrate in a contour of a circular cone, a polygonal pyramid, a planar ellipse, or a triangle and a film of a metal, a dielectric, or a semiconductor formed in a periphery of the scatterer with film thickness equal to height of the scatterer.
Claims20
A near-field optical probe, comprising:
- a substrate;
- and
- a metallic scatterer fabricated on said substrate in a contour of a circular cone or a polygonal pyramid having an axis vertical to a surface of the substrate;
- wherein a localized plasmon is excited inside of said metallic scatter.
A near-field optical probe, comprising:
- a substrate;
- and
- a metallic scatterer fabricated on said substrate in a contour of a planar ellipse having a major axis, a minor axis, and thickness, the major axis, the minor axis, and the thickness being equal to or less than a wavelength of light.
A near-field optical probe, comprising:
- a substrate;
- and
- a metallic scatterer fabricated on said substrate in a contour of a triangle having a vertex with a radius of curvature and thickness, the radius of curvature and the thickness being equal to or less than a wavelength of light.
A near-field optical probe, comprising:
- a substrate;
- and
- a metallic scatterer fabricated on said substrate in a contour of a triangle having a first vertex, second vertex, and a third vertex, the first vertex having a radius of curvature less than a radius of curvature of each of the second and third vertices.
A near-field optical probe, comprising a substrate on which a metallic film having a pointed tip end and a metallic film having an arbitrary contour are formed for generating a plasmon resonance, in which an interval between the pointed tip end metallic film and the arbitrarily contoured metallic film is equal to or less than 50 nm.
A near-field optical probe, comprising a substrate on which two metallic films each having a pointed tip end are formed for generating a plasmon resonance, in which an interval between the pointed tip ends is equal to or less than 50 nm.
A near-field optical probe, comprising:
- a substrate;
- and
- a metallic film having a pointed tip end in a contour of a planar ellipse or a triangle on a side surface or an inclined side surface of the substrate, said pointed tip end being brought into contact with a surface of a sample.
Dependencies are inferred from the claim text.