[1] [1] F. E. Auzel. Materials and devices using double-pumped phosphous with energy transfer［J］. Proc. IEEE, 1973, 61(6): 758～786

[2] [2] Y. Wang, J. Ohwaki. New transparent vitroceramics codoped with Er3+ and Yb3+ for efficient frequency upconversion［J］. Appl. Phys. Lett., 1993, 63(24): 3268～3271

[3] [3] F. Vetrone, J. C. Boyer, J. A. Capobianco et al.. 980 nm exited upconversion in an Er-doped ZnO-TeO2 glass［J］. Appl. Phys. Lett., 2002, 80(10): 1750～1754

[4] [4] Tang Bin, Wang Zheng, Yang Yi et al.. Synthesis and luminescence properties of Er3+-doped transparent oxy-fluoride germanate glass ceramics［J］. Acta Optica Sinica, 2010, 30(8): 2344～2349

[5] [5] Han Wanlei, Jia Yutao, Song Yinglin. Characters of luminescence from Tm3+-Er3+-Yb3+ Tri-doped oxyfluoride glass ceramics［J］. Acta Optica Sinica, 2011, 31(2): 0216001

[6] [6] Chen Daqin, Wang Yuansheng, Yu Yunlong et al.. A bright white light up-conversion emission in glass-ceramic［P］. China Patent: CN 101456675, 2009-06-17

[7] [7] Zhang Long, Zhang Junjie, Qi Changhong et al.. Energy transfer and upconversion in Tm3+/Yb3+ co-doped AlF3-basde fluoride glass［J］. Chinese J. Lasers, 2000, A27(5): 459～465

[8] [8] Li Chenxia, Kang Juan, Zheng Fei et al.. Upconversion luminescence of Ho3+/Yb3+ codoped oxyfluoride silicate glass ceramics［J］. Chinese J. Lasers, 2009, 36(5): 1184～1189

[9] [9] Yang Zhiyong, Luo Lan, Chen Wei. Spectral analyses of rare-earth ions in solid luminescent materials［J］. Acta Optica Sinica, 2007, 27(4): 598～602

[10] [10] Li Chenxia, Xu Shiqing, Ye Renguang et al.. Optical properties of Eu2+/Eu3+ doped SiO2-Al2O3-ZnO-K2CO3 glass-ceramic［J］. Acta Optica Sinica, 2010, 30(4): 1084～1087

[11] [11] B. R. Judd. Optical absorption intensities of rare-earth ions［J］. Phys. Rev., 1962, 127(3): 750～761

[12] [12] G. S. Ofelt. Intensities of crystal spectra of rare-earth ions［J］. J. Chem. Phys., 1962, 37(3): 511～520

[13] [13] W. T. Carnall, P. R. Fields, K. Rajnak. Spectral intensities of the trivalent lanthanides and actinides in solution［J］. J. Chem. Phys., 1968, 49(10): 4412～4423

[14] [14] W. T. Carnall, P. R. Fields, B. G. Wybourne. Spectral intensities of the trivalent lanthanides and actinides in solution［J］. J. Chem. Phys., 1965, 42(11): 3797～3806

[15] [15] W. T. Carnall, P. R. Fields, K. Rajnak. Electronic energy levels in the trivalent lanthanides aqeo ions［J］. J. Chem. Phys., 1968, 49(10): 4424～4442

[16] [16] S. Tanabe, T. Ohyagi, N. Soga et al.. Compositional dependence of Judd-Ofelt parameters of Er3+ ions in alkali-metal borate glasses［J］. Phys. Rev. B, 1992, 46(6): 3305～3310

[17] [17] S. Tanabe, T. Ohyagi, S. Todoroki et al.. Relation between the Ω6 intensity parameter of Er3+ inos and the 151Eu isomer shift in oxide glasses［J］. Appl. Phys., 1993, 73(12): 8451～8454