Growth Of Potassium Titanyl Phosphate (KTP) Crystals By Flux Method: Investigation Of Crucible Adhesion Issues

29 May

Authors: Pankaj R. Uikey, Ramesh M. Thombare, Ratan S. Meshram, Vijay R. Raghorte, Roshan Tadurwar

Abstract: Potassium titanyl phosphate (KTiOPO4, KTP) is a nonlinear optical material widely used in laser applications due to its high optical damage threshold and efficient frequency conversion. This study investigates the synthesis of KTP crystals via the flux growth method, utilizing a mixture of 10 g KH2PO4, 3.5 g TiO2, and an additional 10 g KH2PO4 as a flux, heated at 1100 ◦C for 4 hours in a platinum crucible. The experiment resulted in the material adhering strongly to the crucible, preventing effective crystal extraction. This paper systematically analyzes the experimental conditions, potential causes of crucible adhesion, and proposes modifications to improve KTP crystal growth. The results suggest that excessive temperature, improper flux composition, and crucible interactions contributed to the observed adhesion.