[1] Sorokina I T, Vodopyanov K L[M]. Solid-state mid-infrared laser sources(2003).

[2] Mahon R, Burris H R, Ferraro M S et al. A comparative study of 3.6 μm and 1.55 μm atmospheric transmission[J]. Proceedings of SPIE, 6951, 69510Q(2008).

[3] Yang J Y, Gong F Q, Liu R et al. Application and progress of mid-infrared laser in optoelectronic countermeasure field[J]. Flight Control & Detection, 3, 34-42(2020).

[4] Jiang J T, Wei M E, Xiong Z D et al. Observation of dentin ablation using an Er∶YAG laser in a sub-pulse sequence mode[J]. Chinese Journal of Lasers, 48, 0107001(2021).

[5] Bawden N, Matsukuma H, Henderson-Sapir O et al. Actively Q-switched dual-wavelength pumped Er3＋∶ZBLAN fiber laser at 3.47 μm[J]. Optics Letters, 43, 2724-2727(2018).

[6] Jobin F, Fortin V, Maes F et al. Gain-switched fiber laser at 3.55 μm[J]. Optics Letters, 43, 1770-1773(2018).

[7] Luo H Y, Yang J, Liu F et al. Watt-level gain-switched fiber laser at 3.46 μm[J]. Optics Express, 27, 1367-1375(2019).

[8] Wei J C, Li P, Yu L P et al. Mode-locked fiber laser of 3.5 μm using a single-walled carbon nanotube saturable absorber mirror[J]. Chinese Optics Letters, 20, 011404(2022).

[9] To bben H. Room temperature cw fibre laser at 3.5 μm in Er3＋-doped ZBLAN glass[J]. Electronics Letters, 28, 1361-1362(1992).

[10] Henderson-Sapir O, Munch J, Ottaway D J. Mid-infrared fiber lasers at and beyond 3.5 μm using dual-wavelength pumping[J]. Optics Letters, 39, 493-496(2014).

[11] Fortin V, Maes F, Bernier M et al. Watt-level erbium-doped all-fiber laser at 3.44 μm[J]. Optics Letters, 41, 559-562(2016).

[12] Maes F, Fortin V, Bernier M et al. 5.6 W monolithic fiber laser at 3.55 μm[J]. Optics Letters, 42, 2054-2057(2017).

[13] Lemieux-Tanguay M, Fortin V, Boilard T et al. 15 W all-fiber laser at 3.55 μm[J]. Optics Letters, 47, 289-292(2022).

[14] Qin Z P, Xie G Q, Ma J G et al. Mid-infrared Er∶ZBLAN fiber laser reaching 3.68 μm wavelength[J]. Chinese Optics Letters, 15, 111402(2017).

[15] Zhang C X, Wu J D, Tang P H et al. ～3.5 μm Er3＋∶ZBLAN fiber laser in dual-end pumping regime[J]. IEEE Access, 7, 147238-147243(2019).

[16] Malouf A, Henderson-Sapir O, Gorjan M et al. Numerical modeling of 3.5 μm dual-wavelength pumped erbium-doped mid-infrared fiber lasers[J]. IEEE Journal of Quantum Electronics, 52, 16332584(2016).

[17] Ashoori V, Malakzadeh A. Explicit exact three-dimensional analytical temperature distribution in passively and actively cooled high-power fibre lasers[J]. Journal of Physics D: Applied Physics, 44, 355103(2011).