在强电阳性过渡金属硫酸盐中实现大二生成和深紫外透明度
Chao Wu1, Chunbo Jiang1, Guangfeng Wei1
1China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
Journal of the American Chemical Society
|January 12, 2023
概括
研究人员使用"阴阳补偿"策略开发了新的深紫外线 (DUV) 非线性光学 (NLO) 晶体. 这些新型硫酸盐材料具有优异的紫外线透明度和强大的第二生成 (SHG) 响应,适用于先进的激光应用.
科学领域:
- 材料科学
- 固态化学
- 光学和光学
背景情况:
- 对于先进的激光技术来说,开发具有广泛的紫外线透明度,强的第二生成 (SHG) 和合适的双折射的深紫外线 (DUV) /太阳盲紫外线非线性光学 (NLO) 晶体至关重要.
- 现有的NLO材料往往无法满足短波UV应用的这些综合要求.
研究的目的:
- 提出并展示一种用于增强无机固体中的光学非线性"补偿"的新策略.
- 为了合成和描述新的d0过渡金属 (TM) 紫外线透明的NLO硫酸盐用于DUV/太阳盲应用.
主要方法:
- 在硫酸盐化合物中引入强电阳性过渡金属.
- 合成的新型硫酸盐材料:MF2(SO4),其中M=Zr (ZFSO) 和Hf (HFSO).
- 具有特征的紫外线透明度切断边和粉末第二生成 (SHG) 响应.
主要成果:
- 合成了第一个d0过渡金属UV透明的NLO硫酸盐,ZFSO和HFSO.
- 达到206nm (ZFSO) 和190nm (HFSO) 以下的短紫外线切割边.
- 对于太阳盲 UV/DUV NLO 硫酸盐 (3.2 × ZFSO 和 2.5 × KDP HFSO) 观察到最强的粉末 SHG 反应,具有合适的双折射率.
结论:
- "阴离子补偿"策略有效地提高了无机固体的光学非线性.
- ZFSO和HFSO为短波UV区域提供了有前途的高性能NLO材料.
- 这项工作为开发急需的先进激光技术NLO材料提供了新的途径.
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