Journal article
Giant enhancement of second-harmonic generation in multiple diffraction orders from sub-wavelength resonant waveguide grating
Optics Laboratory, Department of Physics, Tampere University of Technology, FIN-33101 Tampere, Finland.1
We demonstrate a purely dielectric resonant waveguide structure that enhances the efficiency of second-harmonic generation by a factor of at least 5500 compared to a flat reference surface in the same geometry. We also show that the structure emits second-harmonic radiation in four different directions when the sample is illuminated with fundamental radiation incident at the resonant angle of the sample.
Language: | English |
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Year: | 2010 |
Pages: | 12298-12303 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.18.012298 |