[1] 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).

[2] Quan C, Sun D L, Luo J Q et al. Mid-infrared laser performances of Er∶YAP crystals pumped by xenon lamp[J]. Chinese Journal of Lasers, 46, 0401003(2019).

[3] Sanamyan T, Kanskar M, Xiao Y et al. High power diode-pumped 2.7-μm Er3+∶Y2O3 laser with nearly quantum defect-limited efficiency[J]. Optics Express, 19, A1082-A1087(2011).

[4] Tokita S, Murakami M, Shimizu S et al. 12 W Q-switched Er∶ZBLAN fiber laser at 2.8 μm[J]. Optics Letters, 36, 2812-2814(2011).

[5] Yang J W, Jiang H H, Wang L et al. Study on ablation hard tissue using Q-switched Er: YAG laser and free-running Er∶YAG lasers[J]. Chinese Journal of Lasers, 40, s104001(2013).

[6] Wang L, Wang J T, Yang J W et al. 2.79 μm high peak power LGS electro-optically Q-switched Cr, Er∶YSGG laser[J]. Optics Letters, 38, 2150-2152(2013).

[7] Fan M Q, Li T, Zhao S Z et al. Watt-level passively Q-switched Er∶Lu₂O₃ laser at 2.84 μm using MoS₂[J]. Optics Letters, 41, 540-543(2016).

[8] Fan M Q, Li T, Zhao S Z et al. Multilayer black phosphorus as saturable absorber for an Er∶Lu2O3 laser at ∼3 μm[J]. Photonics Research, 4, 181-186(2016).

[9] Nie H K, Zhang P X, Zhang B T et al. Watt-level continuous-wave and black phosphorus passive Q-switching operation of Ho3, Pr3∶LiLuF4 bulk laser at 2.95 μm[J]. IEEE Journal of Selected Topics in Quantum Electronics, 24, 1600205(2018).

[10] Wei C, Zhu X S, Wang F et al. Graphene Q-switched 2.78 μm Er3+-doped fluoride fiber laser[J]. Optics Letters, 38, 3233-3236(2013).

[11] Könz F, Frenz M, Romano V et al. Active and passive Q-switching of a 2.79 μm Er∶Cr∶YSGG laser[J]. Optics Communications, 103, 398-404(1993).

[12] Vodopyanov K L, Shori R, Stafsudd O M. Generation of Q-switched Er∶YAG laser pulses using evanescent wave absorption in ethanol[J]. Applied Physics Letters, 72, 2211-2213(1998).

[13] Kisel V E, Shcherbitskii V G, Kuleshov N V et al. Saturable absorbers for passive Q-switching of erbium lasers emitting in the region of 3 μm[J]. Journal of Applied Spectroscopy, 72, 818-823(2005).

[14] Inochkin M V, Korostelin Y V, Landman A I et al. A compact Er∶YLF laser with a passive Fe2+∶ZnSe shutter[J]. Journal of Optical Technology, 79, 337-339(2012).

[15] Velikanov S D, Gavrishchuk E M, Zakharov N G et al. Efficient operation of a room-temperature Fe2+∶ZnSe laser pumped by a passively Q-switched Er∶YAG laser[J]. Quantum Electronics, 47, 831-834(2017).

[16] Degnan J J. Theory of the optimally coupled Q-switched laser[J]. IEEE Journal of Quantum Electronics, 25, 214-220(1989).

[17] Dong J. Numerical modeling of CW-pumped repetitively passively Q-switched Yb∶YAG lasers with Cr∶YAG as saturable absorber[J]. Optics Communications, 226, 337-344(2003).