Second-harmonic generation from an array of subwavelength metal apertures

Marc B. Airola; Steve Blair

doi:10.1117/12.591651

14 March 2005 Second-harmonic generation from an array of subwavelength metal apertures

Marc B. Airola, Steve Blair

Author Affiliations +

Proceedings Volume 5736, Nanomanipulation with Light; (2005) https://doi.org/10.1117/12.591651
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

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.

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Marc B. Airola and Steve Blair "Second-harmonic generation from an array of subwavelength metal apertures", Proc. SPIE 5736, Nanomanipulation with Light, (14 March 2005); https://doi.org/10.1117/12.591651

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