[1] [1] R. M. Klbas, N. G. Anderson, W. D. Laidig et al.. Strained-layer InGaAs-GaAs-AlGaAs photopumped and current injection laser. IEEE J. Quant. Electron., 1988, QE-24(8):1605～1613

[2] [2] P. Lacovara, H. K. Chai, C. A. Wang et al.. Room-tenperature diode-pumped Yb:YAG laser. Opt. Lett., 1991, 16(14):1089～1091

[3] [3] L. D. Deloach, S. A. Payne, L. L. Chase et al.. Evaluation of absorption and emission properties of Yb3+ doped crystals for laser applications. IEEE J. Quant. Electron., 1993, QE-29(4):1179～1190

[4] [4] C. D. Marshall, L. K. Smith, R. J. Beach et al.. Diode-pumped Yb:Sr5(PO4)3F laser performance. IEEE J. Quant. Electron., 1996, QE-32(4):650～656

[5] [5] S. A. Payne, W. F. Krupke. A glimpse into the laser crystal ball. Opt. Phonon. News, 1996, Aug.:31～35

[6] [6] W. F. Krupke, L. L. Chase. Ground-state depleted solid-state laser principles, characteristics and scaling. Opt. Quant. Electron., 1990, QE-22:s1～s22

[7] [7] D. S. Sumida, T. Y. Fan. Effect of radiation trapping on fluorescence lifetime and emission cross section measurements in solid-state laser media. Opt. Lett., 1994, 19(17):1343～1346

[8] [8] G. Huber, E. Heumann, T. Sandrock et al.. Up-conversion processes in laser crystals. J. Luminescence, 1997, 72～74:1～3