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5 March 2021 Enhanced nonlinear optical response in atomically thin films
Álvaro Rodríguez Echarri, Joel Cox, Fadil Iyikanat, Javier Garía de Abajo
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Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 116700I (2021) https://doi.org/10.1117/12.2582455
Event: SPIE LASE, 2021, Online Only
Abstract
The nonlocal response associated with the collective oscillation of conduction electrons (plasmons) in atomically thin films plays a significant role in the optical response. Here we exploit the use of surface plasmons to characterize the nonlinear optical behavior of few atom-thick films. The results show beneficial use of thinner films that are computed employing a full quantum mechanical model that incorporates details of the crystallographic orientation allowing us to exploit the facets (111) and (100) in the random phase approximation. These results facilitate the fabrication of nanophotonic devices based on crystalline metals films which offer lower losses than their amorphous counterparts.
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Álvaro Rodríguez Echarri, Joel Cox, Fadil Iyikanat, and Javier Garía de Abajo "Enhanced nonlinear optical response in atomically thin films", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 116700I (5 March 2021); https://doi.org/10.1117/12.2582455
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KEYWORDS
Crystals
Nonlinear crystals
Thin films
Metals
Photonic crystals
Plasmonics
Plasmons
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