[1] [1] SIEGMAN A E.How to (maybe) measure

[2] [2] laser beam quality[J].OSA TOPS,1998,17(2):184-199.

[3] [3] SIEGMAN A E.New developments in laser resonators[C].SPIE,1990,1224:2-14.

[4] [4] GAO Chun-qing,WEBER H.On the problems of the beam propagation factor M2[J].Acta

[6] [6] XU Jin-xin,ZHAO Dao-mu,ZHOU Guo-quan.The beam quality factor M2 of semiconductor lasers

[8] [8] ISO/TC 172/SC 91 WG 1 N80,ISO/DIS 1995,11146.

[9] [9] PORRAS M A,MEDINA R.Entropy based definition of laser beam spot size[J].Applied

[10] [10] Optics,1995,34(36):8247-8251.

[11] [11] ZHU Li-hua,NIE Yi-you,L(U) Bai-da.The concept of the beam width and comparison of its

[13] [13] Belanger P A,Champagne Y,Beam C P.Propagation factor of diffracted laser beams[J].Opt

[14] [14] Comm,1994.105 (3,4):233-242.

[15] [15] LUO Shi-rong,L(U) Bai-da,SUN Nian-chun.Generalized M2 factor of truncated beams[J].Acta

[18] [18] COLLINS S A.Lens-systems diffraction integral written in terms of matrix optics[J].J O

[19] [19] S A,1970,60(6):168-170.