Rapid growth and properties of large-aperture 98%-deuterated DKDP crystals  

作　　者：Xumin Cai Xiuqing Lin Guohui Li Junye Lu Ziyu Hu Guozong Zheng 

机构地区：[1]Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Chemistry,Fuzhou University,Fuzhou 350116,China

出　　处：《High Power Laser Science and Engineering》2019年第3期87-94,共8页高功率激光科学与工程（英文版）

基　　金：supported by the State High Technology Program for Inertial Confinement Fusion

摘　　要：In this paper,a highly deuterated potassium dihydrogen phosphate(DKDP)crystal with sizes up to 318 mm×312 mm×265 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 laserinduced 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 J·cm^-2(R-on-1,1064 nm,3 ns),which meets the engineering requirements for use in optical applications.In this paper, a highly deuterated potassium dihydrogen phosphate（DKDP） crystal with sizes up to 318 mm × 312 mm ×265 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 laserinduced 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 J · cm-2（R-on-1, 1064 nm, 3 ns）, which meets the engineering requirements for use in optical applications.

关 键 词：DKDP CRYSTAL large APERTURE HIGHLY DEUTERATED DKDP RAPID growth 

分 类 号：TN2[电子电信—物理电子学]