Lin Donghong, Luo Min, Lin Chensheng, Xu Feng, Ye Ning
Key Laboratory of Optoelectronic Materials Chemistry and Physics , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.
University of Chinese Academy of Sciences , Beijing 100049 , China.
J Am Chem Soc. 2019 Feb 27;141(8):3390-3394. doi: 10.1021/jacs.8b13280. Epub 2019 Feb 14.
A novel mixed alkali hydro-isocyanurate, KLi(HCNO)·2HO was first prepared in AOH-BOH-HCNO (A/B = Li/Na/K/Rb/Cs) system via a solvent-drop grinding method. KLi(HCNO)·2HO shows a large second harmonic generation response (5.3 × KHPO) with an ultraviolet cutoff edge of 237 nm. More importantly, the bulk single crystal can be readily grown through water solution technique. Characterization of these crystals indicates that KLi(HCNO)·2HO has a high laser damage threshold (LDT) (4.76 GW/cm) and exhibits a large birefringence (Δ n = 0.186@514 nm), which reduces Type I phase-matching to 246 nm.
一种新型的混合碱金属异氰尿酸氢盐KLi(HCNO)·2H₂O首次通过溶剂滴磨法在AOH-BOH-HCNO（A/B = Li/Na/K/Rb/Cs）体系中制备得到。KLi(HCNO)·2H₂O表现出较大的二次谐波产生响应（5.3×KH₂PO₄），其紫外截止边为237 nm。更重要的是，通过水溶液技术可以很容易地生长出块状单晶。对这些晶体的表征表明，KLi(HCNO)·2H₂O具有较高的激光损伤阈值（LDT）（4.76 GW/cm²），并且表现出较大的双折射（Δn = 0.186@514 nm），这使得Ⅰ型相位匹配波长缩短至246 nm。
