[1] Wu Yue. Research and design on 2.1 μm optical parametric oscillator[D]. Changchun: Changchun University of Science and Technology, 2008. (in Chinese)

[2] Kieleck C, Hirth A. Investigations of a Q-switched Ho∶YAG laser-intracavity-pumped by a diode-pumped Tm:YLF laser[C]//SPIE, 2004, 5460: 56-63.

[3] Yao Baoquan, He Wanjun. Technical study of ZnGeP2 optical parametric oscillator pumped by a 2 μm Tm, Ho:YLF laser[J]. Chinese Journal of Lasers, 2005, 32(1): 39-42. (in Chinese)

[4] Henrisson M, Tiihonen M, Pasiskevicius V, et al. ZnGeP2 parametric oscillator pumped by a linewidth-narrowed parametric 2 microm source[J]. Optics Letters, 2006, 31(12): 1878-1880.

[5] Jackson S D, Sabella A, Hemming A, et al. High-power 83 Wholmium-doped silica fiber laser operating with high beam quality[J]. Optics Letters, 2007, 32(3): 241-243.

[6] Xie Gang, Peng Yuefeng. Lu Yanhua, et al. High efficiency 23.6 W 2 μm laser[J]. Chinese Jorunal of Lasers, 2007, 34(11): 1488-1491. (in Chinese)

[7] Yu Jirong, Trieu B C, Modlinetal E A. Pulse-switched 2 μm solid-state laser[J]. Opt Lett, 2006, 31(4): 462-464.

[8] Yu Yongji, Chen Xinyu, Wang Chao, et al. A 200 kHz Q-switched adhesive-free bond composite Nd:YVO4 laser using a double-crystal RTP electro-optic modulator[J]. Chinese Physics Letters, 2012, 29(2): 024206-1-4.

[9] Poh Boon Phua, Kin Seng Lai, Wu Ruifen. Multiwatt high-repetition-rate 2 μm output from an intracavity KTP optical parametric oscillator[J]. Applied Optics, 2000, 39(9): 1435-1439.

[10] Wei Xingbin, Peng Yuefeng, Wang Weimin, et al. 2 μm pulsed laser with 100 mJ intracavity KTP optical parametric oscillator[J]. Chinese Journal of Lasers, 2010, 37(11): 2762-2765. (in Chinese)