Graphene Enhanced Absorption Entailed by the Electromagnetic Field Localization in a Photonic Structure

2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)(2023)

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摘要
Since its discovery and proper isolation, graphene has become a popular material with outstanding mechanical, electrical and optical properties, that make it attractive for different potential applications. Graphene has a constant optical absorption of 2.3% in the range of visible and near-infrared ranges [1], which make it an ideal material for the design of photonic and optoelectronic devices, like photodetectors, optical modulators and sensors [2]. Active photonic devices, require a strong light-matter interaction, often happening in a very small volume of absorbing material, especially when integrated photonic chips are envisaged. For this purpose, graphene layers are ideal candidates. However, the absorption given by a single graphene layer on a homogeneous substrate is usually insufficient for most practical sensing applications. Further enhancement of the absorption using material engineering is crucial for the new optical sensing devices.
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absorbing material,absorption spectra,active photonic devices,C/el,constant optical absorption,electromagnetic field localization,graphene enhanced absorption,homogeneous substrate,integrated photonic chips,light-matter interaction,material engineering,monoatomic layers,one-dimensional photonic structure,optical absorbance,optical modulators,optical sensing devices,optoelectronic devices,photodetectors,reflection spectrum,single graphene layer,supercontinuum laser source,surface-enhanced electromagnetic field states,wavelength 550 nm to 1100 nm,wavelength dependent transmission
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