Ultra-Violet Generation in Periodically Poled Lithium Tantalate Waveguides

A. Busacca, E. D'Asaro, S. Stivala, A. Pasquazi and G. Assanto

Appl. Phys. Lett. 93, 121117 (2008)


We demonstrate utraviolet generation in Lithium Tantalate channel waveguides for frequency doubling via quasi-phase matching. The sample, proton exchanged and nanostructured by electric-field assisted surface periodic poling with domains as deep as 40 mm, yield continuos wave ligth at 365.4 nm with conversion efficiency larger than 7.5% W-1cm-2