Effects of chloride introduction on the optical properties and the upconversion emission with 980-nm excitation of Er3+ in ZBLAN fluoride glasses

K. Soga, M. Tsuda, S. Sakuragi, H. Inoue, S. Inoue, A. Makishima

研究成果: Conference article査読

29 被引用数 (Scopus)

抄録

Er-doped ZBLAN fluoride glasses and those containing chloride were prepared. The parameters of optical transitions were determined experimentally. By the introduction of chlorine as replacing NaF with NaCl up to 20 mol% NaCl, the Judd-Ofelt parameters, Ω2 and Ω4, were increased and the multiphonon-relaxation rate decreased. With these parameters inserted into the rate equations, they were numerically solved. The upconversion mechanisms of Er3+ with 980-nm excitation and the effects of chlorine in the samples on the upconversion processes were observed. The upconversion processes for both 550-nm and 660-nm emissions were found to be dominated by the resonant and the phonon-assisted energy transfers. The intensity ratio of the 660-nm emission to the 550-nm emission decreased with increasing NaCl content. This change of intensity ratio was due to the suppression of the phonon-assisted energy transfer by chlorine.

本文言語English
ページ(範囲)272-281
ページ数10
ジャーナルJournal of Non-Crystalline Solids
222
DOI
出版ステータスPublished - 2 12月 1997
イベントProceedings of the 1997 14th University Conference on Glass Science - Bethlehem, PA, USA
継続期間: 17 6月 199720 6月 1997

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