LI YONGPING, ZHU JIANG. Discrete Hankel transform and its application to laser shaping in high efficiency[J]. Acta Optica Sinica, 1989, 9(6): 573
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Discrete zero-order Hankel transorm is developed and applicated to the design of phase units which can uniform optical fields. The results appeared to be more ideal and accurate than the two-dimensional FFT.