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20 August 2020 Nonlinear and nonlocal optics in crystalline atomically thin films
Álvaro Rodríguez Echarri, Joel D. Cox, F. Javier García de Abajo
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Proceedings Volume 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020; 1147107 (2020) https://doi.org/10.1117/12.2567918
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
Crystalline metallic thin films comprised of only a few atomic monolayers support high-quality plasmon resonances sought in nanophotonics applications. Here we employ a rigorous quantum-mechanical description of electrons in such films that accounts for the dominant features of their electronic band structure, including surface and quantum well states, to simulate the associated optical response. We demonstrate that quantum-mechanical features manifest in the linear and nonlinear optical response, with the latter enhanced both by propagating plasmons and reductions in film thickness. Our findings support explorations of atomically-thin nonlinear plasmonic devices based on crystalline metal films offering lower loss than their amorphous counterparts.
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Álvaro Rodríguez Echarri, Joel D. Cox, and F. Javier García de Abajo "Nonlinear and nonlocal optics in crystalline atomically thin films", Proc. SPIE 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020, 1147107 (20 August 2020); https://doi.org/10.1117/12.2567918
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KEYWORDS
Crystals
Nonlinear crystals
Crystal optics
Nonlinear optics
Metals
Photonic crystals
Plasmons
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