Light Confinement with Structured Beams in Gold Nanoparticle Suspensions
| Autor: | Karen Volke-Sepúlveda, Gaetano Assanto, Raul Delgado Delgado Macuil, V. L. Gayou, Felix E. Torres-González, Argelia Balbuena Ortega |
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| Přispěvatelé: | Ortega, A. B., Torres-Gonzalez, F. E., Gayou, V. L., Macuil, R. D., Assanto, G., Volke-Sepulveda, K. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nonlinear plasmonic
Dark soliton Light-induced waveguide soft-matter Physics::Optics 02 engineering and technology 01 natural sciences law.invention Nanoparticle nonlinear plasmonics law light self-localization Applied optics. Photonics Opto-thermal effect All-optical effect Instrumentation Physics Singular optic 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Core (optical fiber) Wavelength light-induced waveguides nonlinear propagation 0210 nano-technology vortex beams Optical vortex Soft-matter singular optics dark solitons opto-thermal effect Vortex beams 010309 optics Optics 0103 physical sciences Light beam Radiology Nuclear Medicine and imaging Structured beam structured beams Topological quantum number Plasmon business.industry Laser all-optical effects Vortex TA1501-1820 nanocolloids Light self-localization nanoparticles Nanocolloid Nonlinear propagation business |
| Zdroj: | Photonics, Vol 8, Iss 221, p 221 (2021) Photonics Volume 8 Issue 6 |
| ISSN: | 2304-6732 |
| Popis: | We carry out an experimental campaign to investigate the nonlinear self-defocusing propagation of singular light beams with various complex structures of phase and intensity in a colloidal suspension of gold nanoparticles with a plasmonic resonance near the laser wavelength (532nm). Studying optical vortices embedded in Gaussian beams, Bessel vortices and Bessel-cosine (necklace) beams, we gather evidence that while intense vortices turn into two-dimensional dark solitons, all structured wavepackets are able to guide a weak Gaussian probe of different wavelength (632.8 nm) along the dark core. The probe confinement also depends on the topological charge of the singular pump. |
| Databáze: | OpenAIRE |
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