Feng Chao, Wu Hongping, Hu Zhanggui, Wang Jiyang, Wu Yicheng, Yu Hongwei
Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China.
Inorg Chem. 2024 Sep 23;63(38):17362-17366. doi: 10.1021/acs.inorgchem.4c03286. Epub 2024 Sep 12.
Nonlinear-optical (NLO) crystals capable of controlling and manipulating light to generate coherent radiation at challenging wavelengths are of significant interest. However, designing a new UV NLO crystal remains difficult due to the rigid requirements for structure and properties. Herein, we have successfully designed and synthesized a novel noncentrosymmetric (NCS) rare-earth borate UV NLO crystal, KY(BO), through the heterovalence substitution of YAl(BO). KY(BO) (KYBO) crystallizes in the NCS and polar space group of 6, with the structure formed by the interconnectioned BO triangles and YO polyhedra through corner-sharing and edge-sharing. The property measurements indicate that KYBO is second-harmonic-generation-active with a moderate response, ∼2 × KDP. Meanwhile, KYBO can exhibit a short UV cutoff edge (λ < 190 nm), indicating its potential as a new UV or deep-UV NLO crystal.
能够控制和操纵光以在具有挑战性的波长下产生相干辐射的非线性光学（NLO）晶体备受关注。然而，由于对结构和性能的严格要求，设计新型紫外NLO晶体仍然困难重重。在此，我们通过YAl(BO)的异价取代成功设计并合成了一种新型非中心对称（NCS）稀土硼酸盐紫外NLO晶体KY(BO)。KY(BO)（KYBO）结晶于NCS和6的极性空间群中，其结构由相互连接的BO三角形和YO多面体通过角共享和边共享形成。性能测量表明，KYBO具有中等响应的二次谐波产生活性，约为2×KDP。同时，KYBO可呈现短的紫外截止边（λ < 190 nm），表明其作为新型紫外或深紫外NLO晶体的潜力。
