Lei Guodong, Zhang Lisong, Xu Mingxia, Liu Baoan, Sun Xun
State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
Key Laboratory of Functional Crystal Materials and Device, Ministry of Education, Shandong University Jinan 250100 China.
RSC Adv. 2024 Aug 19;14(36):26115-26122. doi: 10.1039/d4ra04776a. eCollection 2024 Aug 16.
Deuterated potassium dihydrogen phosphate (DKDP) crystals with different deuterium contents have a wide range of applications, such as frequency conversion in high power lasers, electro-optic modulation, and Q-switching crystals for Pockels cells. However, there is a lack of systematic research on the effect of deuterium content on the fundamental structure and properties of these DKDP crystals. To this end, in this study, a series of DKDP crystals with different deuterium contents have been grown using the "point-seed" rapid growth method, and the structure and properties of the crystals have been characterized. The results indicate that as the deuterium content increases, the cell parameter along the ()-axis direction gradually increases, and the transmittance gradually increases in the infrared range. A small amount of doping (low H or D ratio) reduces the structural integrity of the crystal, and the crystals at intermediate deuterium concentrations have better crystallinity. The thermal properties of the crystals do no change significantly with the variation in the deuterium content. Overall, these findings can serve as a useful reference for boosting the application of DKDP crystals with various deuterium contents.
不同氘含量的磷酸二氘钾（DKDP）晶体有着广泛的应用，例如在高功率激光器中进行频率转换、电光调制以及用于普克尔盒的调Q晶体。然而，关于氘含量对这些DKDP晶体基本结构和性能的影响，目前缺乏系统的研究。为此，在本研究中，采用“点籽晶”快速生长法生长了一系列不同氘含量的DKDP晶体，并对晶体的结构和性能进行了表征。结果表明，随着氘含量的增加，沿（）轴方向的晶胞参数逐渐增大，且在红外范围内透过率逐渐增加。少量掺杂（低H或D比例）会降低晶体的结构完整性，而中等氘浓度的晶体具有更好的结晶度。晶体的热性能不会随着氘含量的变化而显著改变。总体而言，这些发现可为推动不同氘含量DKDP晶体的应用提供有用的参考。
