High Power Laser Science and Engineering, 2019, 7 (3): 03000e46, Published Online: Aug. 1, 2019
Rapid growth and properties of large-aperture 98%-deuterated DKDP crystals Download: 811次
Abstract
In this paper, a highly deuterated potassium dihydrogen phosphate (DKDP) crystal with sizes up to $318~\text{mm}\times 312~\text{mm}\times 265~\text{mm}$ was grown by the rapid-growth method. The synthesis tank device was specially designed to synthesize a higher deuterium concentration and high-purity DKDP solution. The deuterium content of the as-grown crystal, which was 97.9%, was determined by two methods, including infrared (IR) spectroscopy and thermo-gravimetric analysis (TGA) measurements. The performances of the 97.9% DKDP crystal, including transmission, absorption coefficient, and laser-induced damage threshold (LIDT) were measured. The results indicate that, in the near-infrared band, the transmission of the 97.9% DKDP crystal is higher than that of KDP and 70% DKDP crystals, and the absorption coefficient is lower. The LIDT of the crystal reached $23.2~\text{J}\cdot \text{cm}^{-2}$ (R-on-1, 1064 nm, 3 ns), which meets the engineering requirements for use in optical applications.
Xumin Cai, Xiuqing Lin, Guohui Li, Junye Lu, Ziyu Hu, Guozong Zheng. Rapid growth and properties of large-aperture 98%-deuterated DKDP crystals[J]. High Power Laser Science and Engineering, 2019, 7(3): 03000e46.