[1] [1] N. P. Barnes, W. J. Rodriguez, B. M. Walsh. Ho:Tm:YLF laser amplifiers [J]. J. Opt. Soc. Am. B, 1996, 13(12):2872～2882

[2] [2] B. M. Walsh, N. P. Barnes, B. D. Bartolo. On the distribution of energy between the Tm 3F4 and Ho 5I7 manifolds in Tm-sensitized Ho luminescence [J]. Journal of Luminescence, 1997, 75:89～98

[3] [3] B. M. Walsh, N. P. Barnes, B. D. Bartolo. The temperature dependence of energy transfer between the Tm 3F4 and Ho 5I7 manifolds in Tm-sensitized Ho luminescence in YAG and YLF [J]. Journal of Luminescence, 2000, 90:39～48

[4] [4] G. L. Bourdet, G. Lescroart. Theoretical modeling and design of a Tm, Ho:YLiF4 microchip laser [J]. Appl. Opt., 1999, 38(15):3275～3281

[5] [5] G. J. Koch, J. P. Deyst, M. E. Storm. Single-frequency lasing of monolithic Ho, Tm:YLF [J]. Opt. Lett., 1993, 18(15):1235～1237

[6] [6] C. J. Lee, G. Han, N. P. Barnes. Ho:Tm lasers Ⅱ: experiments [J]. IEEE J. Quantum Electron., 1996, 32(1):104～111

[8] [8] Minoru Doshida, Kazunari Teraguchi, Minoru Obara. Gain measurement and upconversion analysis in Tm3+, Ho3+ co-doped alumino-zirco-fluoride glass [J]. IEEE J. Quantum Electron., 1995, 31(5):910～915

[9] [9] T. Y. Fan, R. L. Byer. Diode laser-pumped solid-state lasers [J]. IEEE J. Quantum Electron., 1988, QE-24(6):895～911