[1] [1] Ke X Z, Xi X L.Introduction to wireless laser communication［M］. Beijing: Beijing University of Posts and Telecommunications Press, 2004: 1-12.

[2] [2] Jiang H L, Tong S F.Space laser communication technology and system［M］. Beijing: National Defense Industry Press, 2010: 1-22.

[3] [3] Li X F.Star laser communication principle and technology［M］. Beijing: National Defense Industry Press, 2007: 1-46.

[4] [4] Tan L Y, Ma J. Satellite optical communication technology［M］. Beijing: Science Press, 2004: 1-30.

[5] [5] Peters W N, Ledger A M. Techniques for matching laser TEM(00) mode to obscured circular aperture［J］. Applied Optics, 1970, 9(6): 1435-1442.

[6] [6] Christy O D. Dual-secondary mirror Cassegrain optical system: US4439012［P］. 1984-03-27.

[7] [7] Kong X L, Hao P M. New method to remove central shade for reflecting laser beam expander［J］. Chinese Journal of Quantum Electronics, 2002,19(3): 205-209.

[8] [8] Chen C W. Re-imaging optical system including refractive and diffractive optical elements: US5287218［P］. 1994-02-15.

[9] [9] Yu J J, Tan L Y, Ma J, et al. A novel method to improve the emission efficiency of satellite optical communication terminal［J］. Chinese Journal of Lasers, 2009, 36(3): 581-586.

[10] [10] Lin Y, Hu J S, Wu K N. Algorithm for the design of diffractive optical elements for laser beam shaping［J］. Acta Optica Sinica, 2007, 27(9): 1682-1683.

[11] [11] Li K, Shi P, Zhang X B, et al. Design and preparation of diffraction optical element in dual lens system［J］. Chinese Journal of Lasers, 2010, 37(8): 1972-1977.

[12] [12] Golini D, Kordonski W I, Dumas P, et al. Magnetorheological finishing(MRF) in commercial precision optics manufacturing［J］. Proceedings of SPIE, 1999, 3782: 80-91.

[13] [13] Peng Y M, Su Z P. Design of freeform surface lens for shaping divergent laser beam［J］. Acta Optica Sinica, 2016, 36(5): 0522003.

[14] [14] Chen K, Li P X, Chen M, et al. Design and analysis of surface parameters of aspheric lenses system converting Gaussian beam to flattop beam［J］. Laser & Optoelectronics Progress, 2011, 48(3): 032201.

[15] [15] Gong H P, Lü Z W, Lin D Y. Present status of laser beam spatial shaping［J］. Laser & Optoelectronics Progress, 2005, 42(9): 2-5.

[16] [16] Pan J H. Optical aspheric design, processing and inspection［M］. Suzhou: Suzhou University Press, 2004: 3-9.