Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2022-01-11 , DOI: 10.1016/j.jallcom.2022.163727
Yinglei Han 1, 2 , Xin Zhao 1 , Feng Xu 1 , Bingxuan Li 1 , Ning Ye 3 , Min Luo 1
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A mercury-based sulfate nonlinear optical (NLO) material, HgSO4, was successfully grown using a hydrothermal method. It crystallizes in the polar space group Pmn21 and forms a three-dimensional spatial network structure consisting of [HgO8] polyhedras and [SO4] polyhedras. The powder second harmonic generation (SHG) measurement showed that HgSO4 is a phase-matching material and has a very strong SHG efficiency of 11 times that of KDP. Such a remarkable SHG response is due to the well-ordered arrangement of the distorted [HgO8] and [SO4] polyhedras. In parallel, large bandgap (4.13 eV) and laser damage threshold (26.5 × AgGaS2) are exhibited. Further characterizations showed that this compound possesses a large birefringence and a wide transmission window from the near-UV to mid-IR, suggesting that HgSO4 may be an excellent mid-IR NLO crystal.
中文翻译:
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HgSO4:一种优良的中红外硫酸盐非线性光学晶体,具有宽带隙和强二次谐波产生响应
使用水热法成功地生长了一种基于汞的硫酸盐非线性光学 (NLO) 材料 HgSO 4 。它在极地空间群Pmn2 1中结晶,形成由[HgO 8 ] 多面体和[SO 4 ] 多面体组成的三维空间网络结构。粉末二次谐波产生(SHG)测量表明,HgSO 4是一种相位匹配材料,具有非常强的 SHG 效率,是 KDP 的 11 倍。如此显着的 SHG 响应是由于扭曲的 [HgO 8 ] 和 [SO 4 ] 多面体的有序排列。同时,大带隙 (4.13 eV) 和激光损伤阈值 (26.5 × AgGaS 2) 展出。进一步的表征表明,该化合物具有较大的双折射和从近紫外到中红外的宽透射窗口,表明 HgSO 4可能是一种优良的中红外非线性光学晶体。