[3] [3] H. W. Bruesselbach, D. S. Sumida, R. A. Reeder et al.. Low-heat high-power scaling using InGaAs-diode-pumped Yb∶YAG lasers[J]. IEEE J. Select. Topics Quantum Electron., 1997, 3(1):105～116

[4] [4] W. F. Krupke. Ytterbium solid-state lasers-the first decade[J]. IEEE J. Select. Topics Quantum Electron., 2000, 6(6):1287～1297

[6] [6] H. Bruesselbach. Presented at the Optical Society of America 2001 Annual Metting, Long Beach, Calif., October 14～18, 2001

[7] [7] Yongyuan Xu, Xinghong Gong, Yujin Chen et al.. Crystal growth and optical properties of YbAl3(BO3)4: a promising stoichiometric laser crystal[J]. J. Cryst. Growth, 2003, 252:241～245

[8] [8] Peizhi Yang, Peizhen Deng, Zhiwen Yin. Concentration quenching in Yb∶YAG[J]. J. Lumin., 2002, 97(1):51～54

[9] [9] F. D. Patel, E. C. Honea, J. Speth et al.. Laser demonstration of Yb3Al5O12(YbAG) and materials properties of highly doped Yb∶YAG[J]. IEEE J. Quantum Electron., 2001, 37(1):135～144