[1] Li J F, Luo H Y, Wang L L et al. Mid-infrared passively switched pulsed dual wavelength Ho3+-doped fluoride fiber laser at 3 μm and 2 μm[J]. Scientific Reports, 5, 10770(2015).

[2] Li H N, Zhang D C, Zhu J F et al. Nanosecond mid-infrared tunable parametric laser[J]. Acta Optica Sinica, 39, 1114002(2019).

[3] Kieleck C, Berrou A, Donelan B et al. 6.5 W ZnGeP2 OPO directly pumped by a Q-switched Tm3+-doped single-oscillator fiber laser[J]. Optics Letters, 40, 1101-1104(2015).

[4] Cho W B, Schmidt A, Yim J H et al. Passive mode-locking of a Tm-doped bulk laser near 2 µm using a carbon nanotube saturable absorber[J]. Optics Express, 17, 11007-11012(2009).

[5] Li D Z, Kong L C, Xu X D et al. Spectroscopy and mode-locking laser operation of Tm∶LuYO3 mixed sesquioxide ceramic[J]. Optics Express, 27, 24416-24425(2019).

[6] Zhao Y G, Wang L, Pan Z B et al. Sub-60-fs pulse generation from a SWCNT mode-locked Tm∶LuYO3 ceramic laser at 2045 nm[C], ATu5A.2(2019).

[7] Luan C, Yang K, Zhao J et al. Diode-pumped mode-locked Tm∶LuAG laser at 2 μm based on GaSb-SESAM[J]. Optics Letters, 42, 839-842(2017).

[8] Wang Y C, Xie G Q, Xu X D et al. SESAM mode-locked Tm∶CALGO laser at 2 µm[J]. Optical Materials Express, 6, 131(2015).

[9] Zhao Y G, Wang Y C, Chen W D et al. 67-fs pulse generation from a mode-locked Tm, Ho∶CLNGG laser at 2083 nm[J]. Optics Express, 27, 1922-1928(2019).

[10] Wang Y C, Chen W D, Mero M et al. Sub-100 fs Tm∶MgWO4 laser at 2017 nm mode locked by a graphene saturable absorber[J]. Optics Letters, 42, 3076-3079(2017).

[11] Ling W J, Sun R, Chen C et al. Passively Q-switched mode-locked Tm∶LuAG laser with reflective MoS2 saturable absorber[J]. Chinese Journal of Lasers, 46, 0808002(2019).

[12] Sun R, Chen C, Ling W J et al. Dual-wavelength passively Q-switched mode-locked Tm∶LuAG laser operating at 2017 nm and 2029 nm[J]. Acta Optica Sinica, 39, 1214004(2019).

[13] Ling W J, Xia T, Dong Z et al. Passively mode-locked Tm, Ho∶LLF laser at 1895 nm[J]. Journal of Optics, 48, 209-213(2019).

[14] Ling W J, Xia T, Dong Z et al. 1.91 µm passively continuous-wave mode-locked Tm∶LiLuF4 laser[J]. Optics & Laser Technology, 108, 364-367(2018).

[15] Walsh B M, Barnes N P. Comparison of Tm∶ZBLAN and Tm∶silica fiber lasers; spectroscopy and tunable pulsed laser operation around 1.9 μm[J]. Applied Physics B, 78, 325-333(2004).

[16] Liu X, Yang K, Zhao S et al. Growth and lasing performance of a Tm, Y∶CaF2 crystal[J]. Optics Letters, 42, 2567-2570(2017).

[17] Tokurakawa M, Sagara H, Tünnermann H. All-normal-dispersion nonlinear polarization rotation mode-locked Tm∶ZBLAN fiber laser[J]. Optics express, 27, 19530-19535(2019).

[18] Jiang X T, Gross S, Zhang H et al. Bismuth telluride topological insulator nanosheet saturable absorbers for q-switched mode-locked Tm∶ZBLAN waveguide lasers[J]. Annalen der Physik, 528, 543-550(2016).

[19] Nomura Y, Fuji T K. Sub-50-fs pulse generation from thulium-doped ZBLAN fiber laser oscillator[J]. Optics Express, 22, 12461-12466(2014).

[20] Xu H L, Jiang Z K. Optical properties of Tm3+-doped fluorozirconate glass[J]. Physics Letters A, 299, 85-88(2002).

[21] Li C X, Huang L L, Fang D W. Spectral characteristic parameters of Tm3+ iorn in glass[J]. Journal of China Institute of Metrology, 36-39(2002).