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Near-field radiation from nano-particles and nano-antennas illuminated with a focused beam of light

Şendur, Kürşat and Şahinöz, Ahmet and Ünlü, Eren Seydi and Yazıcı, Serkan and Gülhan, Mert Mehmet (2009) Near-field radiation from nano-particles and nano-antennas illuminated with a focused beam of light. In: Brongersma, Mark and Dal Negro, Luca and Fukumoto, Joseph and Novotny, Lukas, (eds.) Materials for Nanophotonics — Plasmonics, Metamaterials and Light Localization. Materials Research Society, Warrendale, PA, USA. ISBN 978-1-60511-155-1

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Official URL: http://www.mrs.org/s_mrs/sec_detail.asp?CID=3640&DID=231267

Abstract

The interaction of photons with metallic nanoparticles and nanoantennas yields large enhancement and tight localization of electromagnetic fields in the vicinity of nanoparticles. In the first part of this study, the interaction of a spherical nanoparticle with focused beams of various angular spectra is investigated. This study demonstrates that the focused light can be utilized to manipulate the near-field radiation around nanoparticles. In the second part of this study, the interaction between linearly and radially polarized focused light with prolate spheroidal nanoparticles and nano-antennas is investigated. Strong and tightly localized longitudinal components of a radially polarized focused beam can excite strong plasmon modes on elongated nanoparticles such as prolate spheroids. The effect of a focused beam on parameters such as the numerical aperture of a beam and the wavelength of incident light, as well as particle geometry and composition are also studied.

Item Type:Book Section / Chapter
Subjects:UNSPECIFIED
ID Code:12357
Deposited By:Kürşat Şendur
Deposited On:01 Nov 2009 18:30
Last Modified:01 Nov 2009 18:30

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