%0 Conference Proceedings %T Second harmonic localization in nonlinear photonic crystals - art. no. 698915 %+ Groupe d'étude des semiconducteurs (GES) %A Centeno, Emmanuel %A Ciraci, Cristian %A Felbacq, Didier %A Cassagne, David %< avec comité de lecture %Z GES:08-086 %( PHOTONIC CRYSTAL MATERIALS AND DEVICES VIII %B Conference on Photonic Crystal Materials and Devices VIII %C Strasbourg (FRANCE), France %I SPIE-INT SOC OPTICAL ENGINEERING, PO BOX 10, BELLINGHAM, WA 98227-0010 USA %V 6989 %P 98915-98915 %8 2008-04-08 %D 2008 %K second harmonic conversion %K photonic crystals %K left-handed systems %K REFRACTIVE-INDEX %K GENERATION %K MICROCAVITIES %K METAMATERIALS %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] %Z Physics [physics]/Physics [physics]/Optics [physics.optics]Conference papers %X We demonstrate an isotropic phase matching condition achieved in nonlinear 2D PhCs that suppresses the incident angle constraint [1]. In addition, we show a backward SH localization effect by combining this unusual all-angle phase matching and left-handed PhC properties. The SH emission is confined in a small area of dimension close to the pump wavelength without the introduction of defect lattices. An analytical model is proposed in order to explain this parametric localization mechanism. %G English %L hal-00437951 %U https://hal.science/hal-00437951 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2