Local-field and multipole effects in second-harmonic generation from optical metamaterials

Author

Kauranen, Martti ; Kujala, Sami ; Husu, Hannu ; Canfield, Brian K. ; Laukkanen, Janne ; Bai, Benfeng ; Kuittinen, Markku ; Svirko, Yuri ; Turunen, Jari

Author_Institution

Dept. of Phys., Tampere Univ. of Technol., Tampere

Volume

2

fYear

2008

fDate

22-26 June 2008

Firstpage

38

Lastpage

38

Abstract

We present evidence of local-field and multipole effects in second-harmonic generation from optical metamaterials consisting of arrays of metal nanoparticles and nanodimers with a nanogap. Second-harmonic generation from T-shaped nanodimers is not driven primarily by strong gap fields, instead symmetry of the local fundamental field distribution in the structure plays a key role. Interference between dipolar and higher multipolar (magnetic-dipole and electric-quadrupole) sources is obtained by comparing polarized second-harmonic responses in reflection and transmission.

Keywords

metamaterials; nanoparticles; optical harmonic generation; optical materials; T-shaped nanodimers; dipolar sources; local fundamental field distribution; local-field effects; metal nanoparticles; metal nanostructures; multipolar sources; multipole effects; nanogap; optical metamaterials; plasmonics; polarized second-harmonic responses; second-harmonic generation; strong gap fields; Gold; Interference; Magnetic resonance; Metamaterials; Nanoparticles; Nonlinear optics; Optical arrays; Optical polarization; Optical sensors; Physics; local fields; metal nanostructures; multipole effects; plasmonics; second-harmonic generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks, 2008. ICTON 2008. 10th Anniversary International Conference on

Conference_Location

Athens

Print_ISBN

978-1-4244-2625-6

Electronic_ISBN

978-1-4244-2626-3

Type

conf

DOI

10.1109/ICTON.2008.4598583

Filename

4598583