[1] Tian Y, Xu R R, Zhang L Y, Hu L L, Zhang J J. Observation of 2.7 μm emission from diode-pumped Er3+/Pr3+-codoped fluorophosphate glass. Optics Letters, 2011, 36(2): 109-111
[2] Xu R R, Tian Y, Hu L L, Zhang J J. Enhanced emission of 2.7 μm pumped by laser diode from Er3+/Pr3+-codoped germanate glasses. Optics Letters, 2011, 36(7): 1173-1175
[3] Tian Y, Xu R R, Hu L L, Zhang J J. Intense 2.7 μm and broadband 2.0 μm emission from diode-pumped Er3+/Tm3+/Ho3+-doped fluorophosphate glass. Optics Letters, 2011, 36(16): 3218-3220
[4] Fan J, Yuan X, Li R, Dong H, Wang J, Zhang L. Intense photoluminescence at 2.7 μm in transparent Er 3+: CaF2-fluorophosphate glass microcomposite. Optics Letters, 2011, 36(22): 4347-4349
[5] Sandrock T, Diening A, Huber G. Laser emission of erbium-doped fluoride bulk glasses in the spectral range from 2.7 to 2.8 μm. Optics Letters, 1999, 24(6): 382-384
[6] Zhong H Y, Chen B J, Ren G Z, Cheng L H, Yao L, Sun J S. 2.7 μm emission of Nd3+, Er3+codoped tellurite glass. Journal of Applied Physics, 2009, 106(8): 083114-1-083114-3
[7] Guo Y Y, Li M, Tian Y, Xu R R, Hu L L, Zhang J J. Enhanced 2.7 μm emission and energy transfer mechanism of Nd3+/Er3+ codoped sodium tellurite glasses. Journal of Applied Physics, 2011, 110(1): 013512-1-013512-5
[8] Tsang Y, Richards B, Binks D, Lousteau J, Jha A. A Yb3+/Tm3+/Ho3+ triply-doped tellurite fibre laser. Optics Express, 2008, 16(14): 10690-10695
[9] Zhou B, Tao L, Tsang Y H, Jin W, Pun E Y B. Superbroadband near-IR photoluminescence from Pr3+-doped fluorotellurite glasses. Optics Express, 2012, 20(4): 3803-3813
[10] Zhou B, Tao L, Tsang Y H, Jin W, Pun E Y B. Superbroadband nearinfrared emission and energy transfer in Pr3+-Er3+ codoped fluorotellurite glasses. Optics Express, 2012, 20(11): 12205-12211
[11] Zhou B, Tao L, Jin W, Tsang Y H, Pun E Y B. Superbroadband NIR photoluminescence in Nd3+/Tm3+/Er3+ codoped fluorotellurite glasses. IEEE Photonics Technology Letters, 2012, 24(11): 924-926
[12] Xu Y, Chen D, Wang W, Zhang Q, Zeng H, Shen C, Chen G. Broadband near-infrared emission in Er3+-Tm3+ codoped chalcohalide glasses. Optics Letters, 2008, 33(20): 2293-2295
[13] Lin H, Chen D, Yu Y, Yang A, Wang Y. Enhanced mid-infrared emissions of Er3+ at 2.7 μm via Nd3 + sensitization in chalcohalide glass. Optics Letters, 2011, 36(10): 1815-1817
[14] Zhou B, Lin H, Chen B, Pun E Y B. Superbroadband near-infrared emission in Tm-Bi codoped sodium-germanium-gallate glasses. Optics Express, 2011, 19(7): 6514-6523
[15] Zhang Q, Ding J, Shen Y, Zhang G, Lin G, Qiu J, Chen D. Infrared emission properties and energy transfer between Tm3+ and Ho3+ in lanthanum aluminum germanate glasses. Journal of the Optical Society of America. B, 2010, 27(5): 975-980
[16] Liu X, Qiao Y, Dong G, Ye S, Zhu B, Lakshminarayana G, Chen D, Qiu J. Cooperative downconversion in Yb3+/-RE3+ (RE = Tm or Pr) codoped lanthanum borogermanate glasses. Optics Letters, 2008, 33(23): 2858-2860
[17] Zhang W J, Zhang Q Y, Chen Q J, Qian Q, Yang Z M, Qiu J R, Huang P,Wang Y S. Enhanced 2.0 μm emission and gain coefficient of transparent glass ceramic containing BaF2: Ho3+, Tm3+ nanocrystals. Optics Express, 2009, 17(23): 20952-20958
[18] Chen D, Wang Y, Yu Y, Liu F, Huang P. Sensitized thulium ultraviolet upconversion luminescence in Tm3+/Yb3+/Nd3+ triply doped nanoglass ceramics. Optics Letters, 2007, 32(21): 3068-3070
[19] Zhu X, Jain R. Numerical analysis and experimental results of highpower Er/Pr:ZBLAN 2.7 μm fiber lasers with different pumping designs. Applied Optics, 2006, 45(27): 7118-7125
[20] Neely T W, Johnson T A, Diddams S A. High-power broadband laser source tunable from 3.0 μm to 4.4 μm based on a femtosecond Yb:fiber oscillator. Optics Letters, 2011, 36(20): 4020-4022
[21] Pollnau M, Ghisler C, Lüthy W, Weber H P, Schneider J, Unrau U B. Three-transition cascade erbium laser at 1.7, 2.7, and 1.6 μm. Optics Letters, 1997, 22(9): 612-614
[22] Park Y H, Lee D W, Kong H J, Kim Y S. Dynamics of a flashlamp pumped 2.70 μm emission Cr:Er:YSGG laser with an infraredquartz FTIR shutter. Journal of the Optical Society of America. B, 2008, 25(12): 2123-2129
[23] Zhu Z, Li J, You Z, Wang Y, Lv S, Ma E, Xu J, Wang H, Tu C. Benefit of Pr3 + ions to the spectral properties of Pr3+/Er3+:CaGdAlO4 crystal for a 2.7 μm laser. Optics Letters, 2012, 37(23): 4838-4840