[1] [1] K L Vodopyanov, F Ganikhanov, J P Maffetone, et al.. ZnGeP2 optical parametric oscillator with 3.8~12.4 μm tenability [J]. Opt Lett, 2000, 25(11): 841-843.

[2] [2] Chen Jiakang, Sun Dunlu, Zhang Huili, et al.. Research progress of 2.7~3 μm rare earth laser crystals [J]. J Synth Cryst, 2013, 42(5): 824-832.

[3] [3] Yang Jingwei, Wang Li, Wu Xianyou, et al.. Numerical simulation and experimental study on thermal effects of 2.94 μm Er:YAG laser [J]. Acta Optica Sinica, 2012, 32(6): 0614002.

[4] [4] Chen Jiakang, Sun Dunlu, Luo Jianqiao, et al.. Spectroscopic properties and diode end-pumped 2.79 μm laser performance of Er,PrGYSGG crystal [J]. Opt Express, 2013, 21(20): 23425-23432.

[5] [5] Wang Li, Yang Jingwei, Wu Xianyou, et al.. 2.79 μm high peak power and narrow pulse electro-optically Q-switched Cr,ErYSGG laser [J]. Chinese J Lasers, 2013, 40(1): 0106002.

[6] [6] W S Rabinovich, S R Bowman, B J Feldman, et al.. Tunable laser pumped 3 μm HoYA1O3 laser [J]. IEEE J Quantum Electron, 1991, 27(4): 895-897.

[7] [7] A F Umyskov, Y D Zavartsev, A I Zagumennyi, et al.. Efficient 3-μm Cr3+,Yb3+,Ho3+:YSGG crystal laser [J]. Quantum Lett, 1996, 26(9): 771-772.

[8] [8] Pan Zhonghan, Wu Lusheng, Lu Shiping, et al.. An optical parametric oscillator (OPO) tunable laser in 1.47~4 μm [J]. Acta Optica Sinica, 1885, 5(7): 590-593.

[9] [9] D D Hudson, R J Williams, M J Withford, et al.. Single-frequency fiber laser operating at 2.9 μm [J]. Opt Lett, 2013, 38(14): 2388-2390.

[10] [10] Wang Xiaodan, Xu Xiaodong, Zang Taocheng, et al.. Growth and spectral properties of TmLu3Al5O12 crystal [J]. J Chin Rare Earth Soc, 2009, 27(6): 745-749.

[11] [11] M V Derdzyan, K L Ovanesyan, A G Petrosyan, et al.. Radiation hardness of LuAGCe and LuAGPr scintillator crystals [J]. J Cryst Growth, 2012, 361: 212-216.

[12] [12] K Beil, S T Fredrich-Thornton, F Tellkamp, et al.. Thermal and laser properties of YbLuAG for kW thin disk lasers [J]. Opt Express, 2010, 18(20): 20712-20722.

[13] [13] Wang Xiaodan, Xu Xiaodong, Wang Jingya, et al.. Spectrum and laser properties of Nd:Lu3Al5O12 crystal [J]. Chinese J Lasers, 2012, 39(5): 0506001.

[14] [14] N P Barnes, E D Filer, F L Naranjo, et al.. Spectroscopic and lasing properties of HoTmLuAG [J]. Opt Lett, 1993, 18(9): 708-710.

[15] [15] K Scholle, E Heuman, G Huber. Single mode Tm and Tm,Ho:LuAG laser for lidar applications [J]. Laser Phys Lett, 2004, 1(6): 285-290.

[16] [16] V Kushawaha, Y Chen, Y Yan, et al.. High-efficiency continuous-wave diode-pumped TmHoLuAG at 2.1 μm [J]. Appl Phys B, 1996, 62(1): 109-111.

[17] [17] Y Kuwano, K Suda, N Ishizawa, et al.. Crystal growth and properties of (Lu,Y)3Al5O12[J]. J Cryst Growth, 2004, 260(1-2): 159-165.

[18] [18] A A Kamenski. Laser Crystal [M]. Beijing: Science Press, 1981. 66-67.

[19] [19] A Diening, S Kück. Spectroscopy and diode-pumped laser oscillation of Yb3+, Ho3+-doped yttrium scandium gallium garnet [J]. J Appl Phys, 2000, 87(9): 4063-4068.