无机材料学报2024，Vol.39Issue(3)：330-336,中插9-中插10,9.DOI:10.15541/jim20230462
掺铒CaF2、SrF2、PbF2晶体的光谱性能与团簇结构研究
Spectroscopic Properties and Optical Clusters in Erbium-doped CaF2,SrF2 and PbF2 Crystals
摘要
Abstract
As a fundamental light source and a good window for atmospheric transmission,the mid-infrared 3 μm lasers have led many promising applications.The rare earth doped crystalline materials,such as erbium doped crystals,are some of the most important routes for generation of the lasers.However,they have an intrinsic shortcoming of self-termination because of their short lifetime of 4I11/2 and longer lifetime of 4I13/2.To eliminate this effect,a high concentration doping method is usually adopted to change the energy transfer process to decrease 4I13/2 lifetime.The efficiency and output power of Er3+-doped crystals were thus limited due to their degraded thermal properties.Trivalent erbium ions are easily clustering in fluoride crystals.Distances among the ions are short and therefore energy transfer processes could be significantly improved in the crystals even doping with low concentrations.Low doping concentrations could also alleviate the thermal effect in laser operations,which enable the erbium doped fluorides to be promising candidates for high power and high efficiency mid-infrared lasers.However,connection of spectral properties and erbium clusters is unknown.Here,the first principles calculation is utilized to model the erbium ion clusters in CaF2,SrF2 and PbF2 crystals,concerning the absorption and photoluminescence properties.The results reveal that spectral properties and structures of the erbium clusters,evolve gradually with matrix crystals.Relationship between spectral properties and optical erbium clusters is determined qualitatively,which could be used to design new erbium doped mid-infrared lasers.关键词
铒/掺杂/氟化物晶体/铒离子团簇/光谱性能Key words
erbium/doping/mid-infrared laser crystal/erbium cluster/spectroscopic property分类
数理科学引用本文复制引用
TAM YU Puy Mang,马凤凯,苏良碧,徐愉,高泉浩,周海琼,张振,尹浩,李真,吕启涛,陈振强..掺铒CaF2、SrF2、PbF2晶体的光谱性能与团簇结构研究[J].无机材料学报,2024,39(3):330-336,中插9-中插10,9.基金项目
National Key R&D Program of China(2022YFB3605702) （2022YFB3605702）
National Natural Science Foundation of China(61925508,61905289) （61925508,61905289）
Key-area Research and Development Program of Guangdong Province(2020B090922006) （2020B090922006）
Guangzhou Science and Technology Project(202201010427) （202201010427）
CAS Project for Young Scientists in Basic Research(YSBR-024) （YSBR-024）
