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深紫外线非线性光学晶体的合理设计

Haonan Liu¹, Hongping Wu¹, Zhanggui Hu¹

¹State Key Laboratory of Crystal Materials, Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystals, Tianjin University of Technology, Tianjin 300384, China.

Journal of the American Chemical Society

|August 26, 2025

概括

设计和合成了一种新的深紫外 (DUV) 非线性光学 (NLO) 酸盐晶体,CsSrB3O6 (CSBO). 其有序结构增强了稳定性和NLO特性,使其成为一个有前途的DUV NLO材料.

科学领域:

材料科学
固态化学
晶体学

背景情况:

无机材料的合理设计,特别是深紫外 (DUV) 非线性光学 (NLO) 晶体,是一个挑战.
现有的 DUV NLO 材料经常存在结构障碍和热不稳定性.

研究的目的:

合理设计和合成一个新的DUV透明的NLO玻尿酸晶体,具有更好的结构稳定性和NLO性能.
通过计算实验方法制定高性能NLO晶体的有效策略.

主要方法:

结构稳定性分析的 phonon 振动计算的第一原则.
高温固态反应用于合成.
通过将K+/Y3+替换为Sr2+进行阴离子调节策略.

主要成果:

成功合成了CsSrB3O6 (CSBO),一种新的DUV透明NLO酸盐.
与CKYBO (9.32) 相比,CSBO具有较低的热膨胀异构性,可以防止晶体破裂.
CSBO显示出强烈的第二生成响应 (5.0 × KDP),短的紫外线吸收边缘 (<190 nm) 和中等的双折射率 (0.075@1064 nm).

结论:

CSBO是一种有前途的DUV NLO材料,具有平衡的功能性能.
阴离子调节策略有效控制结构失调并提高晶体稳定性.
协同计算-实验方法对于开发高性能NLO晶体是有效的.

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