Open AccessThird-harmonic generation from arrays of sub-wavelength metal apertures
Author(s) -
Tingjun Xu,
Xiaojin Jiao,
Steve Blair
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.023582
Subject(s) - optics , wavelength , extraordinary optical transmission , aperture (computer memory) , materials science , transmission (telecommunications) , angle of incidence (optics) , second harmonic generation , high harmonic generation , scaling , physics , surface plasmon , plasmon , surface plasmon polariton , laser , geometry , telecommunications , acoustics , mathematics , computer science
We measure third-harmonic generation (THG) from arrays of sub-wavelength metal apertures in transmission using fundamental input at 800 nm. Samples with different aperture spacings, sizes, and shapes are used. Strong angular dependence of THG is observed, with maxima located at incidence angles corresponding to extraordinary optical transmission (EOT) for the fundamental. We demonstrate an anomalous scaling of TH intensity with aperture size, where at different EOT peaks, the TH may either increase or decrease with aperture size. The aperture shape is also shown to have a strong effect on TH output.