2026-08-23T19:56:27Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/1335422026-02-28T00:50:51Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Hernández Rueda, Francisco Javier author Sanz Ortiz, Ángel Santiago author Martínez Herrero, María Rosario 2026-02-27T16:51:53Z 2026-02-27T16:51:53Z 2025-12 J. Hernandez-Rueda, Á.S. Sanz, R. Martínez-Herrero, Engineering of self-bending surface plasmon polaritons through Hermite–Gaussian mode expansion, Optics & Laser Technology 192 (2025) 113462. https://doi.org/10.1016/j.optlastec.2025.113462. 0030-3992 10.1016/j.optlastec.2025.113462 https://hdl.handle.net/20.500.14352/133542 1879-2545 https://doi.org/10.1016/j.optlastec.2025.113462 https://www.sciencedirect.com/science/article/pii/S0030399225010539 Surface plasmon polaritons have received much attention over the last decades in photonics or nanotechnology due to their inherent high sensitivity to metal surface variations (e.g., presence of adsorbates or changes in the roughness). It is thus expected that they will find promising major applications in widely cross-disciplinary areas, from material science to medicine. Here we introduce a novel theoretical framework suitable for designing new types of structured paraxial surface plasmon beams and controlling their propagation. More specifically, this method relies on a convenient Hermite-Gaussian mode expansion, which constitutes a complete basis set upon which new types of structured paraxial plasmon beams can be generated. The family of beams generated in this way presents a rather peculiar feature: they exhibit local intensity maxima at different propagation distances, which enables the control over where to place the beam energy. This, thus, opens up worthwhile pathways to manipulate light propagation along metal surfaces at the nanoscale. As a proof-of-concept, we provide numerical evidence of the feasibility of the method by analyzing the propagation of Airy-based surface plasmon polaritons along an air-silver interface. eng Attribution-NonCommercial 4.0 International Engineering of self-bending surface plasmon polaritons through Hermite–Gaussian mode expansion journal article 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URL https://docta.ucm.es/bitstreams/42b3f420-8e71-4971-b467-af23a1031c46/download File MD5 549dc723cf8d17156923fd002f320c0b 2044467 application/pdf Optics and Laser Technology 192 (2025) 113462.pdf