Table 4 The spontaneous radiative transition probability (Arad), branching ratios (β) and radiative lifetimes (τrad) of Er3+ for selected level transition in prepared samples

From: Mid-infrared fluorescence, energy transfer process and rate equation analysis in Er3+ doped germanate glass

 

Y2Er

N2Er

Transition

A (s−1)

β (%)

τrad (ms)

A (s−1)

β (%)

τrad (ms)

4I13/2→4I15/2

155.42

100

6.43

179.55

100

5.57

4I11/2→4I15/2

148.35

83.07

5.60

175.48

83.32

4.75

4I11/2→4I13/2

30.24

16.93

-

35.12

16.68

-

4I9/2→4I15/2

141.69

74.45

5.25

187.98

77.53

4.12

4I9/2→4I13/2

45.70

24.01

-

51.27

21.14

-

4I9/2→4I11/2

2.93

1.54

-

3.21

1.32

-

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