Title :
A Novel Configuration for Phase-Matched Second-Harmonic Generation in LiNbO3 Waveguides
Author :
Pigozzo, Filippo Maria ; Autizi, Elena ; Capobianco, Antonio-Daniele ; Argiolas, Nicola ; Bazzan, Marco ; Sada, Cinzia
Author_Institution :
DEI Dept., Padova Univ.
fDate :
4/15/2007 12:00:00 AM
Abstract :
We present a feasibility study of a novel technique for continuously phase-matched second-harmonic generation in proton-exchanged lithium niobate waveguides. We demonstrate that a periodic variation of the nonlinear coefficient along the transverse direction with respect to the propagation one permits for efficient conversions. Comparison with the conventional first-order quasi-phase-matching interactions are then presented in front of unavoidable imperfections of real devices whenever Czochralski off-center technique is exploited in the fabrication process
Keywords :
integrated optics; ion exchange; lithium compounds; optical harmonic generation; optical phase matching; optical waveguides; Czochralski off-center technique; LiNbO3; LiNbO3 waveguides; first-order quasiphase-matching; nonlinear coefficient; optical phase matching; proton-exchanged waveguides; second-harmonic generation; Coherence; Frequency conversion; Lithium niobate; Niobium compounds; Nonlinear optical devices; Nonlinear optics; Optical device fabrication; Optical frequency conversion; Optical propagation; Optical waveguides; Lithium niobate; optical planar waveguides; second-harmonic generation (SHG);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.894100
