Wave-mixing origin and optimization in single and compact aluminum nanoantennas

  title={Wave-mixing origin and optimization in single and compact aluminum nanoantennas},
  author={Maeliss Ethis de Corny and Nicolas Chauvet and Guillaume Laurent and Mathieu Jeannin and Logi Olgeirsson and Aur{\'e}lien Drezet and Serge Huant and G{\'e}raldine Dantelle and Gilles Nogues and Guillaume Bachelier},
  journal={arXiv: Optics},
The outstanding optical properties for plasmon resonances in noble metal nanoparticles enable the observation of non-linear optical processes such as second-harmonic generation (SHG) at the nanoscale. Here, we investigate the SHG process in single rectangular aluminum nanoantennas and demonstrate that i) a doubly resonant regime can be achieved in very compact nanostructures, yielding a 7.5 enhancement compared to singly resonant structures and ii) the \(\chi_{\perp\perp\perp}\) local surface… 

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