Chiral Coupling in T-shaped Gold Nanodimers

Author

Canfield, B.K. ; Husu, Hannu ; Kauranen, Martti ; Laukkanen, Janne ; Bai, Benfeng ; Kuittinen, Markku ; Turunen, Jari

Author_Institution

Tampere Univ. of Technol., Tampere

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

Strong optical activity in T-shaped metal nanodimers with a nanogap was shown through polarization-sensitive second-harmonic generation (SHG). Chirality in gold nanodimers was studied by circular-difference (CD) measurements, where the SHG efficiency of a sample is compared for left- and right-circular fundamental polarizations. A strong dependence of the SHG CD response on nanogap size that does not directly correlate with the dependence of the SHG intensity obtained was found.

Keywords

chirality; gold; light polarisation; nanostructured materials; optical harmonic generation; Au; SHG intensity; T-shaped metal nanodimers; chirality; circular-difference measurements; nanogap size; polarization-sensitive second-harmonic generation; Arm; Bars; Gold; Laboratories; Nanoparticles; Nanostructures; Optical coupling; Optical harmonic generation; Optical polarization; Optical sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4387026

Filename

4387026