[1] CHENAIS S,BALEMBOIS F,DRUON F et al.Thermal lensing in diode-pumped ytterbium lasers-part Ⅰ:theoretical analysis and wavefront measurements[J].IEEE J Q E,2004,40(9):1217~1234.
[2] ZHU G Zh,CHEN P F,ZOU X F et al.Finite element analysis of laser medium's thermal-lens[J].Laser Technology,2004,28 (2):208~212(in Chinese).
[3] ZHANG Q L,JIANG H H,YIN Sh T.Properties of LD edge-pumped Yb:YAG laser[J].Laser Technology,2005,29(1):82~86 (in Chinese).
[4] BROWN D.Nonlinear thermal and stress effects and scaling behavior of YAG slab amplifiers[J].IEEE J Q E,1998,34(12):2393~2402.
[5] LIU Q,GONG M L,LU F Y et al.520W continuous-wave diode corner-pumped composite Yb:YAG slab laser[J].Opt Lett,2005,30(7):726~728.
[6] WALLACE J.Commercial disk laser reaches 4kW output[J].Laser Focus World,2004,40(9):19~20.
[7] CHEN Y,CHEN B,PATEL M K et al.Calculaton of thermal-gradient-induced stress birefringence in slab Iasers-Ⅰ[J].IEEE J Q E,2004,40(7):909~916.
[8] HELLO P,DURAND E,FRITSCHEL P.Thermal effects in Nd:YAG slabs 3-D modelling and comparison with experiments[J].Journal of Modern Optics,1994,41 (7):1371~1390.
[9] WYNNE R,DANEU J,FAN T Y.Thermal coefficients of the expansion and refractive index in YAG[J].Appl Opt,1999,38 (15):3282~3284.
[10] ZHAO Ch M,WEI G H.An investigation on the improvement of the beam quality of high average power solid-state lasers[J].Opto-electronic Engineering,1997,24 (5):50~58 (in Chinese).