Transient and persistent spectral hole burning in Eu3+-doped sol-gel produced SiO2 glass

Transient and persistent spectral hole burning (TSHB and PSHB) experiments were performed on Eu³⁺ ions in sol-gel SiO2 glasses with aluminum co-doping. Differences in the hole burning behavior were observed among samples made from two organosilicate precursors that were annealed to a series of final temperatures. All glasses exhibited persistent spectral holes when annealed to 800°C but, as the annealing temperature was raised to 1000°C, an increasing number of Eu³⁺ ions exhibited TSHB with a corresponding decrease in the number of ions showing PSHB behavior. The transient hole burning behavior is similar in nature to that observed for Eu³⁺-doped silicate melt glass. © 2004 Elsevier B.V. All rights reserved.

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Author James H. Nolen Mathematics