Abstract

KTiOPO4 (KTP) crystals have been grown by flux method in various ambients. A colorless KTP crystal was obtained in nitrogen ambient. It has been found that the absorption coefficient in the region from 400 to 550 nm depended on the oxygen concentration in the growth ambient. The strong correlation between the absorption coefficient and Pt impurity concentration suggests that the absorption of KTP crystal is attributed to incorporated Pt ions in the crystal.

© 1996 Optical Society of America

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