| Autor: |
Sardar, Dhiraj K., Castano, Francisco |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2/1/2002, Vol. 91 Issue 3, p911, 5p, 4 Charts, 3 Graphs |
| Abstrakt: |
Spectroscopic and laser properties have been characterized for Pr[sup 3+] incorporated into Sr[sub 5](PO[sub 4])[sub 3]F crystal belonging to the apatite structure family. The standard Judd–Ofelt analysis has been applied to the measured optical absorption intensities to determine the radiative decay rates, branching ratios, and emission cross sections of principal intermanifold transitions of Pr[sup 3+] from the [sup 1]D[sub 2] and [sup 3]P[sub 0] states to the lower-lying manifolds in the visible region. The measured room temperature fluorescence lifetimes of the [sup 1]D[sub 2]→[sup 3]H[sub 4] (594 nm) and [sup 3]P[sub 0]→[sup 3]F[sub 2] (625 nm) transition are 325 and 105 μs, respectively, while the Judd–Ofelt analysis predicts the radiative lifetimes for the [sup 1]D[sub 2] and [sup 3]P[sub 0] states to be 822 and 116 μs, respectively. The room temperature emission cross sections of the [sup 1]D[sub 2]→[sup 3]H[sub 4] and [sup 3]P[sub 0]→[sup 3]F[sub 2] intermanifold transitions have been also determined to be 0.54×10[sup -20] and 4.15×10[sup -20] cm[sup 2], respectively. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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