[1] Zhang J, Schulze F, Mak K F, et al. High-power, high-efficiency Tm: YAG and Ho: YAG thin-disk lasers [J]. Laser & Photonics Reviews, 2018, 12(3): 1700273. doi:  10.1002/lpor.201700273
[2] Gaida C, Gebhardt M, Stutzki F, et al. Self-compression in a solid fiber to 24 MW peak power with few-cycle pulses at 2 μm wavelength [J]. Optics Letters, 2015, 40(22): 5160-5163. doi:  10.1364/OL.40.005160
[3] Murari K, Stein G J, Cankaya H, et al. Kagome-fiber-based pulse compression of mid-infrared picosecond pulses from a Ho: YLF amplifier [J]. Optica, 2016, 3(8): 816-822. doi:  https://doi.org/10.1364/OPTICA.3.000816
[4] Tittel F K, Richter D, Fried A. Mid-Infrared Laser Applications in Spectroscopy[M]. Berlin, Heidelberg: Springer, 2003.
[5] Brons J, Pervak V, Fedulova E, et al. Energy scaling of Kerr-lens mode-locked thin-disk oscillators [J]. Optics Letters, 2014, 39(22): 6442-6445. doi:  10.1364/OL.39.006442
[6] Brons J, Pervak V, Bauer D, et al. Powerful 100-fs-scale Kerr-lens mode-locked thin-disk oscillator [J]. Optics Letters, 2016, 41(15): 3567-3570. doi:  10.1364/OL.41.003567
[7] Schade D, Kttig F, Koehler J R, et al. Scaling rules for high quality soliton self-compression in hollow-core fibers [J]. Optics Express, 2021, 29(12): 19147. doi:  10.1364/OE.426307
[8] Kttig F, Schade D, Koehler J, et al. Efficient single-cycle pulse compression of an ytterbium fiber laser at 10 MHz repetition rate [J]. Optics Express, 2020, 28(7): 9099-9110. doi:  10.1364/OE.389137
[9] Xing S, Kowligy A S, Lesko D, et al. All-fiber frequency comb at 2 microm providing 1.4-cycle pulses [J]. Optics Letters, 2020, 45(9): 2660-2663. doi:  10.1364/OL.391486
[10] Gaida C, Gebhardt M, Heuermann T, et al. Watt-scale super-octave mid-infrared intrapulse difference frequency generation [J]. Light: Science & Applications, 2018, 7(1): 94. doi:  10.1038/s41377-018-0099-5
[11] Hou Shanglin, Lei Jinli, Wu Qiling, et al. Enhanced femtosecond optical pulses compression in highly nonlinear photonic crystal fibers(invited) [J]. Infrared and Laser Engineering, 2019, 48(1): 0103004. (in Chinese)
[12] Mak K F, Seidel M, Proninet O, et al. Compressing µJ-level pulses from 250 fs to sub-10 fs at 38-MHz repetition rate using two gas-filled hollow-core photonic crystal fiber stages [J]. Optics Letters, 2015, 40(7): 1238-1241. doi:  10.1364/OL.40.001238
[13] Zhang J, Mak K F, Nagl N, et al. Multi-mW, few-cycle mid-infrared continuum spanning from 500 to 2250 cm−1 [J]. Light: Science & Applications, 2018, 7(2): 17180. doi:  10.1038/lsa.2017.180
[14] Hauri C P, Lopez-Martens R B, Blaga C I, et al. Intense self-compressed, self-phase-stabilized few-cycle pulses at 2 μm from an optical filament [J]. Optics Letters, 2007, 32(7): 868-870. doi:  10.1364/OL.32.000868
[15] Gerz D, Schweinberger W, Butler T P, et al. Mid-infrared long-pass filter for high-power applications based on grating diffraction [J]. Optics Letters, 2019, 44(12): 3014-3017. doi:  10.1364/OL.44.003014
[16] Agrawal G P. Nonlinear fiber optics [J]. Lecture Notes in Physics, 2005, 18(1): 88-116.