[2] [2] I. F. Elder, M. J. P. Payne. Lasing in diode-pumped Tm:YAP, Tm, Ho:YAP and Tm, Ho:YLF [J]. Opt. Commun., 1998, 145:329～339

[3] [3] I. F. Elder, M. J. P. Payne. YAP versus YAG as a diode-pumped host for thulium [J]. Opt. Commun., 1998, 148:265～269

[9] [9] Paul J.M. Suni, Sammy W. Henderson. 1-mJ/pulse Tm:YAG laser pumped by a 3-W diode laser [J]. Opt. Lett., 1991, 16(11) 817～819

[10] [10] A. Yoshikawa, G. Boulon, L. Laversenne et al.. Growth and spectroscopic analysis of Yb3+-doped Y3Al5O12 fiber single crystals [J]. J. Appl. Phys., 2003, 94(9):5479～5488

[11] [11] B. R. Judd. Optical absorption intensities of rare-earth ions [J]. Phys. Rev., 1962, 127(3):750～761

[12] [12] G. S. Ofelt. Intensities of crystal spectra of rare-earth ions [J]. The Journal of Chemical Physics, 1962, 37(3):511～520

[13] [13] A. A. Kaminskii. Laser Crystal: Their Physics and Properties [M]. Springer Verlag, Berlin, Heidelberg, New York, 1981. 19～20

[14] [14] John A. Caird, Larry G. Deshazer, John Nella. Characteristics of room-temperature 2.3-μm laser emission from Tm3+ in YAG and YAlO3 [J]. IEEE J. Quantum Electron., 1975, QE-11(11):874～881