摘要
利用光谱分析手段研究了熔融淬火法制备的Tm和Yb共掺杂的重金属氟化物玻璃ZrF4-BaF2-LaF3-A1F3-NaF的上转换发光性质.在980 nm连续激光的激发下,观察到了较强的363 nm(1D2→3H6),347nm(1I6→3F4)和291 nm(1I6→3H6)的紫外上转换发光,以及中心位于454 nm,475 nm,643 nm,687 nm和804 nm的上转换荧光.这些上转换发射所对应的f-f跃迁为1D2→3F4,1G4→3H6,1G4→3F4,3F3→3H6和3H4→3H6.根据上转换发光强度随泵浦光功率的双对数变化关系得到,347 nm和363 nm的发光分别属于5光子和4光子上转换过程.结果表明:Tm和Yb共掺杂的ZrF4-BaF2-LaF3-A1F3-NaF玻璃可以有效地把近红外波段的激光转化成紫外波段的光.
The ultraviolet upconversion luminescence properties of the Tm3＋ ion sensitized by the Yb3＋ ion were studied,in fluoride glass as excited by a 980 nm continuous wave diode laser.Red,blue,and even ultraviolet emissions were observed with ZrF4-BaF2-LaF3-A1F3-NaF glass,and it was also found that the peaks at 291,347,363,454,475,643,687 and 804 nm correspond to the transitions of 1I6→3H6,1I6→3F4,1D2→3H6,1D2→3F4,1G4→3H16,G4→3F4,3F3→3H6,and 3H4→3H6,respectively.According to the relationship between the pump power and the upconversion peaks intensity,347 nm and 363 nm ultraviolet emissions are five photon and four photon processes respectively.The research results show that the ZrF4-BaF2-LaF3-A1F3-NaF glass of the Tm3＋ ion sensitized by the Yb3＋ ion can effectively transform the near-infrared waveband laser to the ultraviolet.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第1期61-63,共3页
Acta Photonica Sinica
基金
国家高技术研究发展项目(No.2009AA03Z309)
吉林省科技厅国际合作项目(No.20100702)
吉林大学基本科研业务费项目(No.421033461411)资助
