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Proceedings Paper

Second-harmonic generation from an array of subwavelength metal apertures
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Paper Abstract

We demonstrate the generation of second-harmonic radiation in transmission through periodic and disordered arrays of sub-wavelength metallic apertures. For circular apertures in a square lattice, the second-harmonic signal peaks at incidence angles corresponding to enhanced transmission of the fundamental beam of 800~nm wavelength except at small incidence angles where the local symmetry minimizes the effective second-order nonlinear susceptibility of the apertures. Even though the linear transmission of the fundamental beam can be more than five times greater through the periodic array as compared to a disordered array, the strength of the second harmonic from the disordered array is greater at large incidence angles. By breaking the local symmetry through the use of apertures of non-centrosymmetric shape, the second-harmonic output occurs at fundamental transmission resonances at small incidence angles.

Paper Details

Date Published: 14 March 2005
PDF: 6 pages
Proc. SPIE 5736, Nanomanipulation with Light, (14 March 2005); doi: 10.1117/12.591651
Show Author Affiliations
Marc B. Airola, Johns Hopkins Univ. (United States)
Steve Blair, Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 5736:
Nanomanipulation with Light
David L. Andrews, Editor(s)

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