Second harmonic generation enhancement by use of annular aperture arrays embedded into silver and filled by lithium niobate

Second harmonic generation enhancement by use of annular aperture arrays embedded into silver and filled by lithium niobate

We propose and theoretically study a metallo-dielectric photonic crystal (MDPhC) based on metallic annular aperture arrays (AAA) associated to a nonlinear material (LiNbO(3)) for the second harmonic generation (SHG). An optimal structure design can be found thanks to the relations that link the geom...

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Bibliographic Details
Published in:Optics express Vol. 18; no. 7; pp. 6530 - 6536
Main Authors: Barakat, E H, Bernal, M-P, Baida, F I
Format: Journal Article
Language:English
Published: United States Optical Society of America - OSA Publishing 29-03-2010
Subjects:
Engineering Sciences
Optics
Photonic
Physics
Online Access:Get full text
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Summary:We propose and theoretically study a metallo-dielectric photonic crystal (MDPhC) based on metallic annular aperture arrays (AAA) associated to a nonlinear material (LiNbO(3)) for the second harmonic generation (SHG). An optimal structure design can be found thanks to the relations that link the geometrical parameters to the operating point namely the wavelength of the fundamental and SHG signals. A slow light phenomenon, which occurs at the cut-off frequency of the guided mode through the annular cavities, is at the origin of the SHG signal enhancement. The benefit of the AAA is demonstrated through a comparison with cylindrical aperture arrays.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.006530