摘要
Potassium dihydrogen phosphate （KDP） single crystals have been grown respectively at the rates of about 1 and 20 mm/day from the pure and acid-added solutions by temperature reduction method. The effects of acid and supersaturation on the shape and size of grown crystals were compared and discussed. Samples were cut from different parts of the as-grown crystals for investigating the optical quality, including transmissibility, scattering centers and laser damage threshold. It is found that the stability of KDP growth solution improves to some extent and the growth rates in x- and z-directions have great difference after adding acid. Moreover, the acid causes remarkable differences in optical quality between prismatic and pyramidal sectors.
Potassium dihydrogen phosphate （KDP） single crystals have been grown respectively at the rates of about 1 and 20 mm/day from the pure and acid-added solutions by temperature reduction method. The effects of acid and supersaturation on the shape and size of grown crystals were compared and discussed. Samples were cut from different parts of the as-grown crystals for investigating the optical quality, including transmissibility, scattering centers and laser damage threshold. It is found that the stability of KDP growth solution improves to some extent and the growth rates in x- and z-directions have great difference after adding acid. Moreover, the acid causes remarkable differences in optical quality between prismatic and pyramidal sectors.
基金
Support by the State High Technology Program for Inertial Confinement Fusion (Project 863-804-2)
the NNSFC (60478006) and NSF of Fujian Province (2004HZ01-1)
