[5] J Faist, F Capasso, D L Sivco, et al. Quantum cacsde laser. Science, 264, 553-556(1994).
[7] M E Fermann, I Hartl. Ultrafast fibre lasers. Nature Photonics, 7, 868-874(2013).
[39] M R Majewski, S D Jackson. Tunable dysprosium laser. Optics Letters, 41, 4496-4498(2016).
[63] Bawden N, Matsukuma H, HendersonSapir O, et al. Qswitched dualwavelength pumped 3.5m erbiumdoped infrared fiber laser [C]Fiber Lasers XV: Technology Systems. SPIE, 2018, 10512: 121126.