Habit control of deuterated potassium dihydrogen phosphate crystal for laser applications

8th International Conference on Inertial Fusion Sciences and Applications

Guzman, L.A.^1 ; Suzuki, M.^1 ; Fujimoto, Y.^2 ; Fujioka, K.^2

Dept. of Chemical and Material Engineering, National Institute of Technology, Ibaraki College, Nakane, Hitachinaka

866, Japan^1

Institute of Laser Engineering, Osaka University, Yamadaoka, Osaka

2-6, Japan^2

关键词: Crystal characteristics;    Crystal face;    Deuterated potassium dihydrogen phosphates;    DKDP crystals;    Habit modification;    Rapid growth;    Vertical axis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012024/pdf
DOI  :  10.1088/1742-6596/688/1/012024

来源: IOP

【 摘 要 】

In this study we investigate the habit of partially deuterated potassium dihydrogen phosphate (DKDP) crystals in the presence of Al3+ions. We have grown single DKDP crystals in (50wt% and 80wt%) partially deuterated solutions and in solutions doped with Al3+ions (2 ppm) by the point-seed rapid growth technique at controlled supercooling (ΔT=10°C). The growth length of each crystal face was measured and the aspect ratio was calculated. We found that crystals grown in partially deuterated solutions are similar in aspect ratio, while, crystals grown in deuterated solutions doped with Al3+ions showed a relative change in aspect ratio, the crystal increased in size in the pyramidal direction (vertical axis direction). Crystal characteristics were also analyzed by X-ray diffraction, FTIR and Raman spectroscopy. We have speculated that the relative habit modification is due to a probably adsorption and inclusions of Al3+ions in the prismatic section of the crystal.