[1] W ilson J,Hankes J F B.Lsers,London:Prentice Hall International (UK)Ltd 1987:144
[2] Baer T.J 0 S A,1986;B3:1175
[3] James G E,Harrell E,M Ⅱ.Roy R.Phys Rev,1990;A41(5):2778~2790
[4] Oka M,Kubota S.Opt Lett,1988;13(10):805
[5] Zhu Ch H.Working Report at Optical Institute of TC-Berlin,1999