[1] Cheng Zhaogu,Jiang Jinbo,Li Xianqin et al..Focus characteristics of long distance flying optics [J]. Science in China (Series A),2000,43(9):980～987

[2] R.IfflAa¨Gnder,H.Weber.Focusing of multimode laser beams with variable beam parameters [J].Optica Acta,1996,33(8):1083～1090

[3] James T.Luxon,David E.Parker,John Karkheck.Waist location and Rayleigh range for higher-order mode laser beams [J].Appl.Opt.,1984,23(13):2088～2090

[4] Song Zheng,Lin Yong,Wang Baodong et al..Mathcad 7.0 Introduction and Its Engineering Applications [M].Beijing:People′s Communication Press,1999 (in Chinese)

[5] Keming Du,P.Loosen,H.Kochmann.Properties of a high-power CO2-laser with an adaptive mirror [J].Opt.Comm.,1994,106:269～277

[6] M.Bea,A.Giesen,H.Huegel.On-line control of the focus geometry by coupled adaptive system [J].Laser und Optoelektronik,1994,26(2):43～49