[1] [1] Fromager M, Ait Ameur K. Transformation of an elliptic into a circular beam using a diffractive binary optic [J].Opt. Comm., 2001, 190(1): 45-49

[2] [2] Khonina S N, et al. Leveling the focal spot intensity of the focused Gaussian beam [J]. J. of Mod. Opt., 2000,47(5): 883-904

[3] [3] Hermerschmidt A, Eichler H J. Design of diffractive beam shaping elements for non-uniform illumination wave[C] // SPIE., 1998, 3291:40-48

[4] [4] Gerchberg R W, Saxton W. A practical algorithm for the determination of phase from image and diffraction plane picture [J]. Optik, 1972, 35:237-246

[7] [7] Liang Wenxi, Zhang Jingjuan, Lu Junfeng, et al. Designing a diffractive optical element for controlling the beam profile in a three-dimensional space using the simulated annealing algorithm [J]. Chinese Physics, 2001, 10(12):1129-1135

[8] [8] Zhou Guangya, Zhao Xiaolin, Wang Zonguang. Optimization design of diffractive optical elements by genetic local search algorithms [J]. SPIE, 1999, 3740:222-226

[9] [9] Wang Wei, Li Tao, Li Yongping. A hybrid algorithm for design of DOE in uniform illumination [J]. Opt. Comm.,2000, 181(4): 261-265