2015/05/19 by Sergey Makarov, Sergey V. Makarov, Makarov, Sergey V. +7 · 1 citation
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser Material Processing Techniques #Laser-Matter Interactions and Applications #Optics (physics.optics) #physics.optics
paper · pdf · doi:10.48550/arxiv.1505.05185
Silicon nanoparticles, femtosecond laser pulses, magnetic light
arxiv created 2015/05/19 · openalex publication_date 2015/05/19 · arxiv updated 2015/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose a novel concept for efficient dynamic tuning of optical properties of a high refractive index subwavelength nanoparticle with a magnetic Mie-type resonance by means of femtosecond laser radiation. This concept is based on ultrafast generation of electron-hole plasma within such nanoparticle, drastically changing its transient dielectric permittivity. This allows to manipulate by both electric and magnetic nanoparticle responses, resulting in dramatic changes of its extinction cross section and scattering diagram. Specifically, we demonstrate the effect of ultrafast switching-on a Huygens source in the vicinity of the magnetic dipole resonance. This approach enables to design ultrafast and compact optical switchers and modulators based on the "ultrafast magnetic light" concept.