Integrated frequency shifter in a periodically poled lithium tantalate waveguide
G. Nava, P. Minzioni, I. Cristiani, A. C. Busacca, L. Curcio, S. Stivala and G. Assanto
Electron. Lett. 46 (25), 1686-7 (2010)
Abstract:A frequency shifting device is fabricated and tested in a ferroelectric waveguide in a low-photorefractivity crystal. Periodic poling for quasi-phase-matching and channels for operation in the near-infrared C-band were obtained in congruent lithium tantalate, demonstrating for the first time both wave confinement and two-stage parametric conversion in such waveguides.