Chinese Optics Letters, 2009, 7 (1): 0156, Published Online: Mar. 4, 2009  

Raman and optical absorption spectroscopic investigation of Yb-Er codoped phosphate glasses containing SiO2 Download: 680次

Author Affiliations
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018002 Physical Chemistry of Luminescent Materials, University of Lyon, UMR CNRS 5620, Villeurbanne 69622, France
Abstract
Yb-Er codoped Na2O-Al2O3-P2O5-xSiO2 glasses containing 0-20 mol% SiO2 were prepared successfully. The addition of SiO2 to the phosphate glass not only lengthens the bond between P^{5+} and non-bridging oxygen but also reduces the number of P=O bond. In contrast with silicate glass in which there is only four-fold coordinated Si^{4+}, most probably there coexist [SiO4 tetrahedron and [SiO6] octahedron in our glasses. Within the range of 0-20 mol% SiO2 addition, the stimulated emission cross-section of Er^{3+} ion only decreases no more than 10%. The Judd-Ofelt intensity parameters of Er^{3+}, \Omega_{2} does not change greatly, but \Omega_{4} and \Omega_{6} decrease obviously with increasing SiO2 addition, because the bond between Er^{3+} and O^{2-} is more strongly covalently bonded.

Youkuo Chen, Lei Wen, Lili Hu, Wei Chen, Y. Guyot, G. Boulon. Raman and optical absorption spectroscopic investigation of Yb-Er codoped phosphate glasses containing SiO2[J]. Chinese Optics Letters, 2009, 7(1): 0156.

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