Persistent spectral hole burning of rare-earth ions doped in sol-gel glasses

Masayuki Nogami

doi:10.1117/12.382878

13 April 2000 Persistent spectral hole burning of rare-earth ions doped in sol-gel glasses

Masayuki Nogami

Proceedings Volume 3942, Rare-Earth-Doped Materials and Devices IV; (2000) https://doi.org/10.1117/12.382878
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

We demonstrate a sol-gel method for preparing Eu³⁺ and Sm²⁺ ions-doped glasses exhibiting persistent spectral hole burning at high temperature. Glasses having the composition of Eu³⁺ or Sm²⁺-doped Al₂O₃-SiO₂ have been prepared by the hydrolysis of metal alkoxides and heating at 800 degree(s)C in air or hydrogen gas atmosphere, respectively. The persistent spectral hole burning is measured within the ⁷F₀-⁵D₀ transition band. For the glasses containing OH bonds, the hole is formed by the photoinduced rearrangement of the OH bonds surrounding the Eu³⁺ or Sm²⁺ ions, and is thermally refilled and erased above approximately 200 K. On the other hand, the glasses heated in hydrogen gas show the hole spectra above approximately 200 K. The hole depth is independent of the temperature and is approximately 7 and 15% of the total intensity at room temperature for the Eu³⁺ and Sm²⁺ ions-doped glasses, respectively. The proposed mechanism is the electron transfer between the rare-earth ions and the defect centers related with Al³⁺ ions in glass network.

Citation Download Citation

Masayuki Nogami "Persistent spectral hole burning of rare-earth ions doped in sol-gel glasses", Proc. SPIE 3942, Rare-Earth-Doped Materials and Devices IV, (13 April 2000); https://doi.org/10.1117/12.382878

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