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URN:
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http://URN.fi/URN:NBN:fi:tty-201103311112
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Title:
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Strong enhancement of second-harmonic generation in all-dielectric resonant waveguide grating |
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Author:
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Siltanen, Mikael; Leivo, Samuli; Voima, Pauliina; Kauranen, Martti; Karvinen, Petri; Vahimaa, Pasi; Kuittinen, Markku |
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Publication type:
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Artikkeli - Article |
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Issue date:
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2007 |
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DOI:
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http://dx.doi.org/10.1063/1.2783969
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Description:
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Copyright (2007) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Applied Physics Letters and may be found at http://apl.aip.org/resource/1/applab/v91/i11/p111109_s1. |
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University:
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Tampereen teknillinen yliopisto |
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Department:
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Fysiikan laitos – Institute of Physics |
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Abstract:
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The authors demonstrate that a dielectric resonant waveguide grating can enhance optical second-harmonic generation by a factor of 550 compared to a similar flat surface. Their structure, which consists of purely dielectric and thereby transparent materials, has a low index silicon dioxide grating covered by a high index titanium dioxide layer and it is optimized for the fundamental wavelength of 1064 nm. Polarization dependence of the second-harmonic response suggests that the enhancement arises from the favorable interaction of the resonant waveguide mode and its strong local field with the inherent surface nonlinearity of the dielectric materials. |
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Copyright:
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This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. |