2014/02/21 by Mehmet Emre Taşgın, Ildar Salakhutdinov, Tasgin, Mehmet Emre +15
Engineering · Materials Science · #FOS: Physical sciences #Gold and Silver Nanoparticles Synthesis and Applications #Nonlinear Optical Materials Studies #Optics (physics.optics) #Plasmonic and Surface Plasmon Research
paper · pdf · doi:10.48550/arxiv.1402.5244
openalex publication_date 2014/02/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate effective background-free continuous wave nonlinear optical\nexcitation of molecules that are sandwiched between asymmetrically constructed\nplasmonic gold nanoparticle clusters. We observe that near infrared photons are\nconverted to visible photons through efficient plasmonic second harmonic\ngeneration. Our theoretical model and simulations demonstrate that Fano\nresonances may be responsible for being able to observe nonlinear conversion\nusing a continuous wave light source. We show that nonlinearity enhancement of\nplasmonic nanostructures via coupled quantum mechanical oscillators such as\nmolecules can be several orders larger as compared to their classical\ncounterparts.\n