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Proceedings Paper

Persistent spectral hole burning of rare-earth ions doped in sol-gel glasses
Author(s): Masayuki Nogami
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Paper 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.

Paper Details

Date Published: 13 April 2000
PDF: 12 pages
Proc. SPIE 3942, Rare-Earth-Doped Materials and Devices IV, (13 April 2000); doi: 10.1117/12.382878
Show Author Affiliations
Masayuki Nogami, Nagoya Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 3942:
Rare-Earth-Doped Materials and Devices IV
Shibin Jiang, Editor(s)

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