title: Quasi-phase-matched frequency conversion in ridge waveguides fabricated by ion implantation and diamond dicing of MgO:LiNbO(3) crystals.
abstract: We report on the fabrication and second harmonic generation from a periodically-poled MgO-doped lithium niobate ridge waveguide within the telecommunication L-band. The ridge waveguide is fabricated by carbon ion implantation and the following diamond blade dicing method. A normalized second harmonic conversion efficiency of 20.3%W-1cm-2was obtained with a total insertion loss of 4.3dB at wavelength of 1612.7nm. Our analysis shows that at least ~70% of the second-order nonlinearity was preserved after the implantation and thermal annealing process.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Christian E
authors.initials: CE
authors.lastname: Haunhorst
authors.forename: Martin F
authors.initials: MF
authors.lastname: Volk
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Detlef
authors.initials: D
authors.lastname: Kip