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US 8,805,148 B2Granted
Generation of terahertz electromagnetic waves in graphene by coherent photon-mixing
AssigneeInternational Business Machines Corporation
InventorsPhaedon Avouris, Chun-Yung Sung, Alberto Valdes Garcia, Fengnian Xia
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Abstract
An electromagnetic device and method for fabrication includes a substrate and a layer of graphene formed on the substrate. A metallization layer is patterned on the graphene. The metallization layer forms electrodes such that when the graphene is excited by light, terahertz frequency radiation is generated.
Claims22
An electromagnetic device, comprising:
- a substrate;
- a layer of graphene formed on the substrate;
- and
- a metallization layer patterned on the graphene, the metallization layer forming electrodes directly on the graphene such that when the graphene is excited across the electrodes terahertz frequency radiation is generated.
1 more element
An electromagnetic device, comprising:
- a substrate;
- a waveguide formed on or in the substrate;
- a layer of graphene formed over the waveguide;
- and
- a metallization layer patterned on the graphene wherein the metallization layer forms electrodes directly on the graphene corresponding to an intersection region between the graphene and the waveguide such that when the graphene is excited across the electrodes terahertz frequency radiation is generated.
2 more elements
A method for fabricating an electromagnetic device, comprising:
- providing a layer of graphene on a substrate;
- and
- patterning a metallization layer on the graphene to form electrodes directly on the graphene such that when the graphene is excited across the electrodes terahertz frequency radiation is generated.
Dependencies are inferred from the claim text.