Optical properties of Er/Yb-codoped transparent PLZT ceramic

Optical absorption and emission spectra of Er3+/Yb3+ ions in PLZT (Pb1-xLaxZryTi1-yO3) ceramic have been studied. Based on the Judd-Ofelt (J-O) theory, the J-O intensity parameters were calculated to be Omega2=2.021X10-20cm2, Omega4=0.423X10-20cm2, Omega6=0.051X10-20cm2 from the absorption spectrum...

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Published in:Physica. B, Condensed matter Condensed matter, 2008-01, Vol.403 (1), p.44-49
Main Authors: Zheng, Zhiqiang, Li, Xiaoyan, Liu, Jing, Feng, Zhuohong, Li, Baozeng, Yang, Jiwen, Li, Kewen, Jiang, Hua, Chen, Xuesheng, Xie, Jianping, Ming, Hai
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Language:English
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Summary:Optical absorption and emission spectra of Er3+/Yb3+ ions in PLZT (Pb1-xLaxZryTi1-yO3) ceramic have been studied. Based on the Judd-Ofelt (J-O) theory, the J-O intensity parameters were calculated to be Omega2=2.021X10-20cm2, Omega4=0.423X10-20cm2, Omega6=0.051X10-20cm2 from the absorption spectrum of Er3+/Yb3+-codoped PLZT. The J-O intensity parameters have been used to calculate the radiative lifetimes and the branching ratios for some excited 4I13/2, 4I11/2, 4I9/2 4F9/2, and 4S3/2 levels of Er3+ ion. The stimulated emission cross-section (8.24X10-21cm2) was evaluated for the 4I13/2- > 4I15/2 transition of Er3+. The upconversion emissions at 538, 564, and 666nm have been observed in Er3+/Yb3+-codoped PLZT by exciting at 980nm, and their origins were identified and analyzed.
ISSN:0921-4526
DOI:10.1016/j.physb.2007.08.005