Tailoring the excitation of localized surface plasmon-polariton resonances by focusing radially-polarized beams

Anno: 2009

Autori: Mojarad N.M., Agio M.

Affiliazione autori: Swiss Fed Inst Technol, Phys Chem Lab, Nanoopt Grp, CH-8093 Zurich, Switzerland.

Abstract: We study the interaction of focused radially-polarized light with metal nanospheres. By expanding the electromagnetic field in terms of multipoles, we gain insight on the excitation of localized surface plasmon-polariton resonances in the nanoparticle. We show that focused radially-polarized beams offer more opportunities than a focused plane wave or a Gaussian beam for tuning the near- and far-field system response. These results find applications in nano-optics, optical tweezers, and optical data storage.

Giornale/Rivista: OPTICS EXPRESS

Volume: 17 (1)      Da Pagina: 117  A: 122

Maggiori informazioni: We thank V. Sandoghdar for continuous support and encouragement. We are also indebted to G. Zumofen and M. H. Eghlidi for fruitful discussions. This work was supported by ETH Zurich.
Parole chiavi: Electromagnetic Diffraction; Au Nanoparticles; Optical-systems; Scattering; Microscopy; Particles; Modes; Light; Field
DOI: 10.1364/OE.17.000117

Citazioni: 47
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29
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