Page 34 - Handbook of Lasers

Table 1.1.3— continued
Multi-step Upconversion Excitation Schemes
Upper
Laser laser Codopant
s
ion level ion Upconversion excitation cheme
4
4
4 S 3/2 — 1) I 15/2 fi I 9/2 ß 4 11/2
I
4
4
2) I 11/2 fi F 5/2,7/2 fi ß 4 S 3/2
4
4
1) I 15/2 fi I 11/2 (Er 1 3+ )
—
4
4
2) I 15/2 fi I 11/2 (Er 2 3+ )
4
4
4
4

3) I 11/2 – I 15/2 (Er 1 3+ ) Þ I 11/2 – F 7/2 ß 4 S 3/2 (Er 2 3+ )
2
4 F 9/2 Yb 3+ 1) F 7/2 fi F 5/2 (Yb )
3+
2
3+
4
4
2) I 15/2 fi I 13/2 (Er )
2
3+
2
4
4
3+
3) F 5/2 – F 7/2 (Yb ) Þ I 13/2 – F 9/2 (Er )
2
3+
2
1) F 7/2 fi F 5/2 (Yb )
Yb 3+
2
4
3+
4
2
3+
2) F 5/2 – F 7/2 (Yb ) Þ I 15/2 – I 11/2 (Er )
3+
2
2
3) F 7/2 fi F 5/2 (Yb )
2
3+
3+
2
4
4
4) F 5/2 – F 7/2 (Yb ) Þ I 11/2 – F 7/2 (Er ) ß 4 F 9/2
4
4
4 I 11/2 — 1) I 15/2 fi I 13/2 (Er 1 3+ )
4
4
2) I 15/2 fi I 13/2 (Er 2 3+ )
4
4
4
4
I
3) I 13/2 – I 15/2 (Er 1 3+ ) Þ I 13/2 – I 9/2 ß 4 11/2 (Er 2 3+ )
2
3+
2
Tm 3+ 1 I 6 Yb 3+ 1) F 7/2 fi F 5/2 (Yb )
3
3+
3
2
2
2) F 7/2 – F 5/2 (Yb ) Þ H – H (Tm 1 3+ ) ß 3 4
F
6
5
2
2
3+
3) F 7/2 fi F 5/2 (Yb )
2
3+
3
2
3
H
4) F 5/2 F 7/2 (Yb ) Þ F F (Tm 1 3+ ) ß 3 4
3
4
3
3
3
1
5) F – H (Tm 1 3+ ) Þ F – D (Tm 2 3+ )
3
6
3
2
2
2
3+
6) F 7/2 fi F 5/2 (Yb )
2
2
1
3
3+
I
7) F 5/2 F 7/2 (Yb ) Þ D P (Tm 2 3+ ) ß 1 6
2
J
3
3
Tm 3+ 1 D 2 — 1) H fi H 4
6
1
3
2) H fi D 2
4
3
3
1) H fi H (Tm 1 3+ )
4
6
3
3
2) H fi H (Tm 2 3+ )
4
6
3
1
3
3
3) H – H (Tm 1 3+ ) Þ H – D (Tm 2 3+ )
6
4
4
2
2
2
3+
Tm 3+ 3 H 4 Yb 3+ 1) F 7/2 fi F 5/2 (Yb )
3
3
2) H fi H 5 ß 3 4 3+
F (Tm )
6
3+
3+
2
2
3
3
3) F 5/2 – F 7/2 (Yb ) Þ F – F (Tm ) ß 3 4
H
4
2
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