The spectroscopic properties of erbium-doped silicon dioxide, bismuth oxide, and sodium oxide glasses are investigated based on Judd–Ofelt analysis for absorption spectra, bandwidth analysis for emission spectra, and lifetime measurements of the <sup>4</sup>I<sub>13/2</sub> level of Er<sup>3+</sup>. The effects of bismuth oxide on these three optical parameters are discussed in terms of the local basic nature of the glass, of variations in ligand fields about Er<sup>3+</sup> sites, and of the phonon energy and the refractive index of the glass host, respectively. The data obtained suggest that bismuth oxide does not have a promising composition for use with a broadband erbium-doped fiber amplifier.
© 2003 Optical Society of America
(160.2750) Materials : Glass and other amorphous materials
(160.3130) Materials : Integrated optics materials
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
Jianhu Yang, Shixun Dai, Nengli Dai, Shiqing Xu, Lei Wen, Lili Hu, and Zhonghong Jiang, "Effect of Bi2O3 on the spectroscopic properties of erbium-doped bismuth silicate glasses," J. Opt. Soc. Am. B 20, 810-815 (2003)