David González-Andrade,1 Paula Nuño Ruano,1 Jianhao Zhang,2 Eric Cassan,1 Delphine Marris-Morini,1 Laurent Vivien,1 Norberto Daniel Lanzillotti-Kimura,1 Carlos Alonso-Ramos1
1Ctr. de Nanosciences et de Nanotechnologies (France) 2National Research Council Canada (Canada)
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The patterning of silicon with a period at the subwavelength scale has opened new degrees of freedom to control not only the propagation of light but also of sound. In this invited contribution, we will present our latest results on subwavelength-engineered silicon optomechanical waveguides. We harness subwavelength nanostructuration in a silicon slot waveguide to shape the distribution of the optical mode and maximize the coupling with the mechanical mode. Based on this approach, we demonstrate an enhanced Brillouin gain and a high tunability of the mechanical frequency.
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David González-Andrade, Paula Nuño Ruano, Jianhao Zhang, Eric Cassan, Delphine Marris-Morini, Laurent Vivien, Norberto Daniel Lanzillotti-Kimura, Carlos Alonso-Ramos, "Enhanced stimulated Brillouin scattering in silicon slot subwavelength waveguides," Proc. SPIE PC12889, Integrated Optics: Devices, Materials, and Technologies XXVIII, PC128890N (13 March 2024); https://doi.org/10.1117/12.3001719