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采用激光Raman光谱,研究了KTP-K_2O-P_2O_5和KTP-K_2O-P_2O_5-WO_3两种不同溶液的淬冷玻璃体,这些玻璃体部分地记录了相应溶液的溶质与溶剂间相互作用的信息,溶液中TiO_6、PO_4、WO_4等阴离子基团形成了不同类型的溶剂合物。随后,以籽晶称重法测定了KTP晶体在这两种不同溶液体系中的生长质量速度与溶液过饱和度之间的关系。实验结果表明,KTP晶体生长机制与原子化的BCF生长理论的面扩散或体扩散的线性定律与抛物线定律相吻合。
The quenched glass bodies of KTP-K2O-P2O5 and KTP-K2O-P2O5-WO3 were studied by laser Raman spectroscopy. These glass bodies partly recorded the information about the solute-solvent interactions of the corresponding solutions. In the solution, , PO_4, WO_4 and other anionic groups formed different types of solvates. Subsequently, the relationship between the growth mass velocity of the KTP crystal and the solution supersaturation in these two different solution systems was determined by a seed weight method. The experimental results show that the KTP crystal growth mechanism is consistent with the linear law of surface diffusion or bulk diffusion of atomized BCF growth theory and the parabolic law.