Title :
Nanopatterned Ferroelectric Crystals for Parametric Generation
Author :
Busacca, Alessandro ; Cherchi, Matteo ; Santini, Claudia ; Riva-Sanseverino, Stefano ; Parisi, Antonino ; Cino, Alfonso ; Stivala, Salvatore ; Pasquazi, Alessia ; Colace, Lorenzo ; Assanto, Gaetano
Author_Institution :
Dipartimento Ingegneria Electtrica, Palermo Univ.
Abstract :
We report on recent results by surface periodic poling on lithium niobate and lithium tantalate. Such approach allows periodic inversion of the second order susceptibility with nanoscale features using insulating masks. We achieved a world-best 200 nm feature size, as well as good compatibility with alpha-phase proton exchanged channel waveguides in lithium niobate. Preliminary results of surface periodic poling in lithium tantalate also show similar characteristics. Surface poling is best suited for integrated optics devices in technologically-demanding configurations such as backward second harmonic generation and counter propagating optical parametric amplification
Keywords :
ferroelectric materials; integrated optics; ion exchange; lithium compounds; nanopatterning; nonlinear optical susceptibility; optical harmonic generation; optical materials; optical parametric amplifiers; LiNbO3; LiTaO3; backward second harmonic generation; channel waveguides; ferroelectric crystals; lithium niobate; lithium tantalate; nanopatterning; optical parametric amplification; parametric generation; proton exchange; second order susceptibility; surface periodic poling; Crystals; Ferroelectric materials; Insulation; Integrated optics; Lithium compounds; Lithium niobate; Nanopatterning; Optical harmonic generation; Optical surface waves; Optical waveguides; lithium niobate; lithium tantalate; nonlinear integrated optics; parametric generation; surface periodic poling;
Conference_Titel :
Transparent Optical Networks, 2006 International Conference on
Conference_Location :
Nottingham
Print_ISBN :
1-4244-0235-2
Electronic_ISBN :
1-4244-0236-0
DOI :
10.1109/ICTON.2006.248333
