| Autor: |
Hamad, Abdulatif Y., Wicksted, James P., Ascio, Robert, Martin, Joel J., Hunt, Charles, Dixon, George S. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 9/1/2002, Vol. 92 Issue 5, p2235, 7p, 2 Charts, 8 Graphs |
| Abstrakt: |
We report a systematic study of a grating formation in which the [Eu[sub 2]O[sub 3]] in sodium-magnesiumaluminosilicate glasses is varied from 0.76 to 8.11 mol %. The growth, decay, and erasure of the grating are reported as functions of the [Eu[sub 2]O[sub 3]]. The maximum persistent change in the index of refraction was 3 × 10[sup -5]. The persistent change in the index of refraction was initially a quadratic function of the [Eu[sub 2]O[sub 3]] and showed a limiting behavior at the highest [Eu[sub 2]O[sub 3]]. The transient change in the index of refraction Δn[sub tran] was a quadratic function of [Eu[sub 2]O[sub 3]] throughout the range of concentrations studied here. The grating buildup rate increased linearly with Δn[sub tran]. The results of this study are consistent with the model published recently by Dixon et al. Ionic conductivities were also measured to help separate the effect of the Eu[sup 3+] on the glass network from its active role in transferring the optical energy into ionic motion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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