Year: 2025
Type: article
Abstract: In this paper we present a theoretical examination of second-harmonic generation (SHG) in a graphene monolayer integrated within an attenuated total internal reflection (ATR) configuration. By embedding graphene in this optical setup, we explore the enhancement in the nonlinear optical response, particularly focusing on the efficiency of SHG. Our analysis reveals that the excitation of surface plasmon-polaritons (SPPs) plays a central role in significantly boosting the efficiency of SHG. The unique electronic properties of graphene, combined with the resonant characteristics of SPPs, create a synergistic effect that amplifies the nonlinear optical signals. This enhancement is attributed to the strong field confinement and the resonant nature of SPPs, which effectively increase the interaction between the incident light and the graphene monolayer. Furthermore, we analyze the underlying mechanisms that govern this process, providing a comprehensive theoretical framework that elucidates the interplay between graphene's electronic structure and the optical fields. Our findings suggest that the ATR scheme not only facilitates the excitation of SPPs but also optimizes the conditions for SHG.
DOI: 10.1103/jxtp-18tx
Authors: João M. Alendouro Pinho, Simão S. Cardoso, Yuliy V. Bludov, João M. Viana Parente Lopes, Vladimir V. Konotop, Joel D. Cox, Nuno M. R. Peres
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: Center for Polariton-driven Light-Matter Inter- actions (POLIMA), G2641070859, Centro de Física das Universidades do Minho e do Porto, Centro de Física Teórica e Computacional da Universidade de Lisboa, G559723404, G6236879608, Efeitos de dissipação e desordem na resposta ótica não-linear para além da teoria de perturbações
OpenAlex ID: W4416497879