- Giant second-harmonic generation due to quasi-phase matching in a one-dimensional GaN photonic crystal doi link

Auteur(s): Torres Jeremi, Coquillat D., Legros Rene, Lascaray Jean-Paul, Ruffenach S., Briot O., Aulombard R., Peyrade D., Chen Y., Le Vassor D'Yerville Marine, Centeno Emmanuel, Cassagne D., Albert Jean-Paul

(Article) Publié: Physica Status Solidi B, vol. 240 p.455-458 (2003)
Texte intégral en Openaccess : istex

Ref HAL: hal-00540469_v1
DOI: 10.1002/pssb.200303309
WoS: 000186712100041
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We have demonstrated the giant enhancement of second-harmonic generation in a one-dimensional GaN photonic crystal structure caused by the simultaneous achievement of strong fundamental field confinement and quasi-phase matching conditions. We have firstly measured the linear dispersive properties of the resonant modes for various azimuthal directions to predict the quasi-phase matching conditions. The theory based on a rigorous scattering matrix method has provided a good description of the equi-frequency surfaces. We have then shown that the equi-frequency surfaces may be used to identify the angular situations for which the quasi-phase matching conditions can be satisfied. The SHG enhancement achieved due to the double resonance was 5000 times greater than for the unpatterned GaN layer. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.