Second-harmonic generation in potassium niobate waveguides

摘要

We report on our progress in the formation of waveguides innpotassium niobate (KNbO3) using techniques such as ionnimplantation and ion sputtering. Different methods for the structuringnof channel waveguides are presented, and their advantages andndisadvantages are discussed in terms of their optical and nonlinearnoptical properties. The excellent power-handling capability ofnKNbO3 waveguides is compared to other waveguide materials,nand we highlight the influence of postimplantation annealing andnrepoling on the waveguide attenuation and the nonlinear opticalncoefficient. We also review recent results on second-harmonic generationnin KNbO3 waveguides focusing on blue light generation