[1] [1] Yi Zhang, Genyu Chen, Haiying Wei et al.. A novel “sandwich” method for observation of the keyhole in deep penetration laser welding[J]. Opitcs and Lasers in Engineering, 2008, 46: 133～139

[2] [2] Wu Qiang, Chen Genyu, Wang Gui et al.. CO2 laser welding of Zinc coated high strength steel[J]. Chin. J. Lasers, 2006, 33(8): 1133～1138

[3] [3] Jiang Ping, Chen Wuzhu, Xiahou Lipeng et al.. Mechanism and mathematical model of the laser-induced plasma current in laser welding[J]. Chin. J. Lasers, 2002, A29(5): 471～474

[4] [4] R Alvarez. An Abel inversion method for radially resolved measurements in the axial injection torch[J]. Spectrochimica Acta Part B, 2002, 57： 1665～1680

[5] [5] Vittorio Magni. High-accuracy fast Hankel tansform for optical beam propagation[J]. Optical Society of America, 1992, 9(11): 2031～2033

[6] [6] William L. Barr. Method for computing the radial distribution of emitters in a cylindrical source[J]. J. Optical Society of America, 1962, 52(8): 885～888

[7] [7] Shao Hua, Zhu Danping, Wu Yixiong. Numerical methods of Abel inversion[J]. J. Shanghai Jiaotong University, 2005, 39(8): 1375～1388