Table 1
Reduced Matrix Elements of
U(i), Mean Wavelengths 〈λ〉, and
Absorption Transition Intensities in Pr:AgBr Crystals
Transition from 3
H
4 to
| 〈λ〉 (nm)
| [U
(2)]2
| [U
(4)]2
| [U
(6)]2
|
S
cal(J, J′) 10-20 cm2
|
S
meas(J, J′) 10-20 cm2
|
---|
3
P
2
| 450 | 0 | 0.036 | 0.137 | 3.91 | — |
3
P
1
| 489 | 0 | 0.17 | 0 | 5.5 | — |
1
D
2
| 597 | 0.0023 | 0.0165 | 0.0493 | 1.53 | 5.48 |
1
G
4
| 1020 | 0.00188 | 0.00437 | 0.0119 | 0.39 | 0.45 |
3
F
4
| 1437 | 0.0162 | 0.0528 | 0.490 | 11.47 | 11.62 |
3
F
3
| 1621 | 0.0658 | 0.349 | 0.700 | 25.73 | 25.55 |
3
F
2 + 3
H
6
| 2018
| 0.508
| 0.436
| 0.261
| 22.21
| 22.22
|
Table 2
Spectroscopic Parameters of
Pr:AgCl0.77Br0.23 Crystals
Absorption transitions from 3
H
4 to
| 〈λ〉 (nm)
| Luminescence Transitions
| 〈λ〉 (nm)
| τmeas (µs)
|
---|
3
P
2
| 448 |
3
P
1 → 3
H
4
| 491 | 4.3 |
3
P
1
| 488 |
3
P
1 → 3
H
5
| 548 | 4.3 |
1
D
2
| 598 |
3
P
0 → 3
H
6
| 619 | 4.0 |
| — |
3
P
0 → 3
F
2
| 646 | 4.0 |
| — |
3
P
0 → 3
F
4
| 730 | 4.0 |
| — |
3
F
3 → 3
H
4
| 1648 | 101 |
| |
3
H
6 → 3
H
4
| 2520
| 1066
|
Table 3
Transition Rates, Branching Ratios, and Quantum
Efficiencies for Pr:AgBr Crystals
Transition
| 〈λ〉 (nm)
|
A
JJ′ (s-1)
| βcalc (%)
| τrad (µs)
| βmeas
| τmeas (µs)
| η
|
---|
3
P
1 → 3
H
4
| 492 | 127770 | 0.41 | 3.2 | | 3.1 | 0.97 |
3
P
1 → 3
H
5
| 550 | 184250 | 0.59 | | | — | |
3
P
0 → 3
H
6
| 620 | 50498 | 0.255 | 5.1 | 0.26 | 3.0 | 0.6 |
3
P
0 → 3
F
2
| 648 | 46061 | 0.235 | — | 0.24 | — | |
3
P
0 → 3
F
4
| 734 | 82696 | 0.42 | — | 0.42 | — | |
3
P
0 → 1
G
4
| 910 | 15200 | 0.07 | — | 0.08 | — | |
3
F
3 → 3
H
4
| 1630 | 7044.6 | | 141.9 | | 130 | 0.92 |
1
G
4 → 3
H
6
| 1750 | 1889.4 | | 529 | | 770 | |
3
H
6 → 3
H
4
| 2550
| 149
| | 6700
| | 7700
| 1
|
Table 4
Judd–Ofelt Parameters for Pr:AgBr Crystals
Crystal | Ω2 (10-20 cm2) | Ω4 (10-20 cm2) | Ω6 (10-20 cm2) |
Pr:AgBr
| 5.43
| 32.59
| 20.01
|
Table 5
Reduced Matrix Elements, Mean Wavelengths of the
Luminescence Bands of U(i), and Calculated
Transition Intensities for Luminescence Transitions for Pr:AgBr
Crystals
Transition
| 〈λ〉 (nm)
| [U
(2)]2
| [U
(4)]2
| [U
(6)]2
|
S
cal(J, J′) 10-20 cm2
|
---|
3
P
1 → 3
H
4
| 492 | 0 | 0.17 | 0 | 5.58 |
3
P
1 → 3
H
5
| 550 | 0 | 0.286 | 0.0893 | 11.108 |
3
P
0 → 3
H
6
| 620 | 0 | 0 | 0.0726 | 1.45 |
3
P
0 → 3
F
2
| 648 | 0.294 | 0 | 0 | 1.51 |
3
P
0 → 3
F
4
| 734 | 0 | 0.121 | 0 | 3.94 |
3
P
0 → 1
G
4
| 910 | 0 | 0.0425 | 0 | 1.38 |
3
F
3 → 3
H
4
| 1625 | 0.0658 | 0.349 | 0.700 | 25.73 |
1
G
4 → 3
H
6
| 1750 | 0.193 | 0.1905 | 0.186 | 10.98 |
3
H
6 → 3
H
4
| 2550
| 0.00015
| 0.0322
| 0.141
| 3.87
|
Table 6
Luminescence Quenching, Activation Energies, and Radiative
and Nonradiative Probabilities for Two Crystals
Sample
| Transition
| 〈λ〉 (nm)
|
U (eV)
|
A
r (s-1)
|
A
q (s-1)
|
---|
Pr:AgBr |
3
P
1 → 3
H
5
| 550 | 0.069 | 3.2 × 10-5
| 2.5 × 108
|
|
3
P
0 → 3
F
2
| 648 | 0.016 | 3.3 × 105
| 2.9 × 106
|
|
3
F
4 → 3
H
4
| 1630 | 0.04 | 7.7 × 103
| 9.2 × 1011
|
|
3
H
6 → 3
H
4
| 2550 | 0.032 | 149.25 | 6.4 × 108
|
Pr:AgCl0.77Br0.23
|
3
F
4 → 3
H
4
| 1648 | 0.017 | 9.9 × 103
| 1.5 × 108
|
|
3
H
6 → 3
H
4
| 2520
| 0.026
| 94.3
| 5.6 × 107
|