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
镱铒共掺磷酸盐玻璃 氧化硅 拉曼光谱 Judd-Ofelt参数 160.2750 Glass and other amorphous materials 160.5690 Rare-earth-doped materials 300.6450 Spectroscopy, Raman 300.6170 Spectra
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.