[1] [1] Huang Cunxin,Li Jianbao,Lei Muyu et al..Research progress and current trends in 3～5 micron optical materials[J]. Journal of Synthetic Crystals, 2003,32(3):276～281

[2] [2] Dong Chunming,Wang Shanpeng,Tao Xutang.Research and development of mid-infrared nonlinear optical crystals[J]. Journal of Synthetic Crystals, 2006,35(4):785～789

[3] [3] Kazi Sarwar Abedin,Sajjad Haidar,Yuji Konno et al.. Difference frequency generation of 5～18 μm in a AgGaSe2 crystal [J]. Appl. Opt.,1998,37 (9):1642～1645

[4] [4] Yao Baoquan,Wang Yuezhu,Li Yufeng et al.. 3～5 μm mid-infrared ZnGeP2OPO with a 0.7 W output power[J].Chinese J. Lasers,2004,31(1):18

[5] [5] LiQi,Dong Guofeng,Wang Qi.Object classification simulation for ladar-passive-infrared imaging combination[J].Chinese J. Lasers,2007,34(10):1347～1352

[6] [6] D.Creeden,P.A.Ketteridge,P.A.Budni et al..Mid-infrared ZnGeP2 parametric oscillator directly pumped by a pulsed 2 μmTm-doped fiber laser[J].Opt.Lett.,2008,33(4):315～317

[7] [7] A.F.Nieuwenhuis, C. J. Lee, I. D. Lindsay et al.. High-efficiency mid-infrared ZnGeP2 optical parametric oscillator directly pumped by a lamp-pumped, Q-switched CrTmHo:YAG laser[J]. Opt. Lett., 2008, 33(1):52～54

[8] [8] Yao Baoquan,He Wanjun,Li Yufeng et al.Technical study of ZnGeP2 optical parametric oscillator pumped by a 2 μm Tm,Ho∶YLF laser[J]. Chinese J. Lasers,2005,32(1):39～42

[9] [9] B. Yao, Y. Ju, Y. Wang et al..Performance evaluation of ZnGeP2 optical parametric oscillator pumped by a Q-switched Tm,Ho:GdVO4 laser[J].Opt.Lett.,2008,33(1):68～70

[10] [10] Liu Qiang,Gong Mai,Yan Ping et al.. Phase-matching of optical parametric oscillator[J].Laser Journal,2002,23(2):1～4

[11] [11] Tian Wen,Ren Gang,Cai Bangwei et al..Calculation and analysis of ZnGeP2 optical parametric oscillator[J]. Laser Technology, 2006, 30(1):104～106

[12] [12] Shi Shunxiang,Chen Guofu,Zhao Wei et al.. Nonlinear Optics [M]. Xi'an:Xidian University Press, 2003.127～128