Abstract

Crystals from the KTP family are attractive for periodic poling as they have a relatively low coercive field, which makes it possible to pole rather thick samples, and a one-dimensional crystal structure that allows fine pitch gratings to be fabricated. Together with their high photorefractive, gray track and laser damage thresholds it makes them well suited for incorporation in wavelength shifted coherent light sources. In contrast to periodically poled lithium niobate can these materials be operated at medium and high powers at room temperature in the whole transmission range from 360 to 5000 nm.

© 2000 IEEE