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| 摘要: |
| 研究了室温下,掺0.3%(摩尔分数)Er3 的20GaF3-15InF3-20CdF2-15ZnF2-20PbF2-10SnF2(0.3Er-GICZPS)玻璃的光谱性质.在761 nm泵浦下获得了408,523和545 nm的上转换荧光,发现其中408 nm的紫色发光与545 nm的绿色发光几乎一样强;523 nm的发射荧光来自于4S3/2和2H11/2之间的无辐射弛豫;408 nm和545 nm的上转换发光机理是双光子过程.同时,应用Judd-Ofelt理论计算了玻璃中的强度参量tΩ(t=2,4,6)以及玻璃中Er3 的自发辐射几率、荧光分支比和荧光寿命等光谱参量,并计算了以上3种上转换荧光的受激发射截面. |
| 关键词: Er3 掺杂,重金属氟化物玻璃,能量上转换,Judd-Ofelt理论 |
| DOI： |
| 分类号:O43 |
| 基金项目: |
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| Spectrum Properties of Er3+ Doped GaF3/InF3 Based Glasses |
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ZHU Ji-qian BAI Chao-ying TANG Gao ZHU Yu-mei
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| Abstract: |
| Spectrum properties of 20GaF_3-15InF_3-20CdF_2-15ZnF_2-19.7PbF_2-10SnF_2-0.3ErF_3 glass were studied under room temperature.Under 761 nm pumping,408, 523 and 545 nm upconversion fluorescence were obtained.And the violet emission intensity of 408 nm is as strong as 545 nm.The possible mechanism of the upconversion of 408 nm and 545 nm could be two-photon process.The cross-relaxation plays a significant role for 523 nm upconversion fluorescence.Spontaneous emission probability,oscillator intensities,branching ratio and lifetime of different energy levels of Er~(3 ) were calculated using Judd-Ofelt theory and emission cross section was calculated,too. |
| Key words: Er~(3 ) doped,heavy metal fluoride glasses,energy upconversion,Judd-Ofelt theory |
