EXPERIMENTAL-DETERMINATION OF RADIATIVE-TRANSITION RATES AND QUANTUM EFFICIENCIES IN ER3+YALO3

被引:11
作者
POLLNAU, M [1 ]
HEUMANN, E [1 ]
DANGER, T [1 ]
HUBER, G [1 ]
机构
[1] UNIV HAMBURG,INST LASER PHYS,D-20355 HAMBURG,GERMANY
关键词
D O I
10.1016/0030-4018(95)00225-W
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A method for the measurement of radiative-transition rates in rare-earth-doped laser crystals with several metastable levels is presented. The excited-state absorption in Er3+:YAlO3 is measured in a pump- and probe-beam experiment. With this information the populations of the metastable levels (4)I1(3/2), I-4(11/2), and S-4(3/2) are derived. In combination with data of the relative fluorescence intensities and fluorescence-decay curves the radiative rates and quantum ifficiencies of transitions from these levels are experimentally determined. The results are compared to data from a Judd-Ofelt analysis.
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页码:250 / 254
页数:5
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