通过共掺杂锆增强掺镁铌酸锂晶体的抗紫外线损伤性能

Enhanced Ultraviolet Damage Resistance in Magnesium Doped Lithium Niobate Crystals through Zirconium Co-Doping.

作者信息

Kong Tengfei, Luo Yi, Wang Weiwei, Kong Hanxiao, Fan Zhiqin, Liu Hongde

机构信息

School of Sciences, Henan University of Technology, Zhengzhou 450001, China.

Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China.

出版信息

Materials (Basel). 2021 Feb 21;14(4):1017. doi: 10.3390/ma14041017.

DOI:10.3390/ma14041017

PMID:33670015

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7926657/

Abstract

MgO-doped LiNbO (LN:Mg) is famous for its high resistance to optical damage, but this phenomenon only occurs in visible and infrared regions, and its photorefraction is not decreased but enhanced in ultraviolet region. Here we investigated a series of ZrO co-doped LN:Mg (LN:Mg,Zr) regarding their ultraviolet photorefractive properties. The optical damage resistance experiment indicated that the resistance against ultraviolet damage of LN:Mg was significantly enhanced with increased ZrO doping concentration. Moreover, first-principles calculations manifested that the enhancement of ultraviolet damage resistance for LN:Mg,Zr was mainly determined by both the increased band gap and the reduced ultraviolet photorefractive center O. So, LN:Mg,Zr crystals would become an excellent candidate for ultraviolet nonlinear optical material.

摘要

掺氧化镁的铌酸锂（LN:Mg）以其高抗光损伤性而闻名，但这种现象仅发生在可见光和红外区域，并且其光折变在紫外区域并未降低反而增强。在此，我们研究了一系列共掺ZrO的LN:Mg（LN:Mg,Zr）的紫外光折变特性。抗光损伤实验表明，随着ZrO掺杂浓度的增加，LN:Mg的抗紫外损伤能力显著增强。此外，第一性原理计算表明，LN:Mg,Zr抗紫外损伤能力的增强主要由带隙增大和紫外光折变中心O减少共同决定。因此，LN:Mg,Zr晶体将成为一种优异的紫外非线性光学材料候选者。