[1] Lippert E, Fonnum H, Arisholm G, et al. A 22-Watt mid-infrared optical para­metric oscillator with V-shaped 3-mirror ring resonator[J]. Optics Express, 18, 26475-26483(2010).

[2] Liu Qiangqiang, Zhu Hongli, Guo Guqing, et al. Simultaneous detection of SO₂ and SO₃ based on mid-ir quantum cascade laser system[J]. Journal of Atmospheric and Environmental Optics, 16, 424-431(2021).

[3] He Qixin, Li Jiakun, Feng Qibo, et al. Development of a mid-infrared cavity enhanced formaldehyde detection system[J]. Spectroscopy and Spectral Analysis, 41, 2077-2081(2021).

[4] Wei Pengfei, Zhang Yongchang, Zhang Jing, et al. Efficient continuous-wave MgO: PPLN optical parametric oscillator with three-mirror linear cavity[J]. Optics and Precision Engineering, 27, 45-50(2019).

[5] Tan Gaijuan, Xie Jijiang, Zhang Laiming, et al. Recent progress in mid-infrared laser technology[J]. Chinese Optics, 6, 501-512(2013).

[6] Yao Wenming, Tan Huiming, Wang Fan, et al. Extra-cavity, all-solid-state continuous wave optical parametric oscillator and stimulated Raman scateering in PPMgLN[J]. Chinese Journal of Lasers, 39, 1202008(2012).

[7] Zhai B, Li H, Luo H, et al. Tunable Fe²⁺: ZnSe passively Q-switched Ho³⁺­doped ZBLAN fiber laser around 3μm[J]. Optics Express, 23, 22362-22370(2015).

[8] Wei C, Luo H, Zhang H, et al. Passively Q-switched mid-infrared fluoride fiber laser around 3 µm using a tungsten disulfide (WS₂) saturable absorbe[J]. Laser Physics Letters, 13, 105108(2016).

[9] Li Chong, Xie Jijiang, Pan Qikun, et al. Progress of mid-infrared optical parametric oscillator[J]. Chinese Optics, 9, 615-624(2016).

[10] [10] Qin Xinzhen. Studies on the infrared Optical Paramertic Oscillat [D]. Hangzhou: Zhejiang University, 2015. (in Chinese)

[11] [11] Shang Yaping. Highpower fiber lasers pumped infrared optical parametric osciallat [D]. Changsha: National University of Defense Technology, 2017. (in Chinese)

[12] Bai Xiang, He Yang, Yu Deyang, et al. Miniaturized mid-infrared MgO: PPLN optical parametric oscillator with high beam quality[J]. Infrared and Laser Engineering, 49, 20190512(2020).

[13] [13] Shen Limei. Research on infrared optical parametric oscillat pumped by dualwavelength fiber laser [D]. Changsha: National University of Defense Technology, 2016. (in Chinese)

[14] [14] Li Ye. Research on intracavity optical parametric oscillat based on ytterbiumdoped fiber laser [D]. Wuhan: Huazhong University of Science Technology, 2019. (in Chinese)

[15] Dong Wenqian, Hao Qiang, Huang Kun, et al. A single-pass optical parametric mid-infrared ultra-short pulse laser system based on all polarization-maintaining fiber laser[J]. Acta Optica Sinica, 41, 1236001(2021).

[16] Brosnan S J, Byer R L. Optical parametric oscillator threshold and linewidth studies[J]. IEEE Journal of Quantum Electronics, 15, 415-431(1979).