Álvaro Rodríguez Echarri,1 Joel Cox,2,3 Javier Garía de Abajo1,4
1ICFO - Institut de Ciències Fotòniques (Spain) 2Univ. of Southern Denmark (Denmark) 3Danish Institute for Advanced Study (Denmark) 4Institució Catalana de Recerca i Estudis Avançats (Spain)
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We study the use of propagating plasmons in 1-D graphene nanoribbons by employing rigorous quantum-mechanical simulations that account for nonlocal, quantum finite-size, and edge-termination effects in the optical response. Our simulations reveal a strong dependence on such phenomena for excitation with a high optical momentum component along the direction of transverse symmetry in both the linear and nonlinear optical response, wherein particular second-order nonlinear phenomena are found to manifest with high efficiency due to the breaking of inversion symmetry. These findings are applied to emitters close by which we use to excite and explore the nonlinear dynamics provided by those plasmons in the graphene ribbons.
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Álvaro Rodríguez Echarri, Joel Cox, Javier Garía de Abajo, "Nonlocal and quantum finite-size effects in the use of guided graphene plasmons," Proc. SPIE 11688, 2D Photonic Materials and Devices IV, 116880P (5 March 2021); https://doi.org/10.1117/12.2582456