. 2014 Jan 9;4:3607. doi: 10.1038/srep03607

Table 4. Calculated predicted spontaneous transition probability (A), radiaive lifetime (τ_rad), and branching ratio (β) of certain optical transitions for Er³⁺ - doped present glasses.

	AYF1			AYF2			AYF3			ZBLAN
Transition	A/S⁻¹	β/%	τ/ms	A	β	τ	A	β	τ	A	β	τ
⁴I_13/2→⁴I_15/2	101.82	100	9.8	97.75	100	10.2	104.1	100	9.6	120.6	100	8.29
⁴I_11/2→⁴I_15/2	83.20	80.4	9.7	77.9	79.9	10.3	86.0	80.7	9.4	105.6	81.8	7.74
→⁴I_13/2	20.30	19.6		19.6	20.1		20.6	19.3		23.57	18.2
⁴I_9/2→⁴I_15/2	69.54	69.1	9.9	63.48	68.3	10.7	67.9	67.8	9.9	106.92	73.9	6.92
→⁴I_13/2	29.15	29.0		27.51	29.6		30.3	30.2		35.65	24.7
→⁴I_11/2	1.93	1.9		1.93	2.08		1.93	1.9		2.01	1.4

Table 4. Calculated predicted spontaneous transition probability (A), radiaive lifetime (τrad), and branching ratio (β) of certain optical transitions for Er3+ - doped present glasses.