Journal
ACS PHOTONICS
Volume 2, Issue 11, Pages 1552-1558Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.5b00209
Keywords
graphene absorption; graphene plasmonic response; silicon photonics; infrared response; absorption enhancement
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Funding
- National Science Foundation [CBET-1438147, DMR-1411107]
- Danish Council for Technical and Production Sciences through the GraTer Project [0602-02135B]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1411107] Funding Source: National Science Foundation
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We report the results of systematic studies of plasmonic and photonic guided modes in large-area single-layer graphene integrated into a nanostructured silicon substrate. The interaction of light with graphene and substrate photonic crystals can be classified in distinct regimes depending on the relation of the photonic crystal lattice constant and the relevant modal wavelengths, that is, plasmonic, photonic, and free-space. By optimizing the design of the substrate, these resonant modes can increase the absorption of graphene in the infrared, facilitating enhanced performance of modulators, filters, sensors, and photodetectors utilizing silicon photonic platforms.
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