由旋转棱镜(axicon)器件生成的无衍射光束(diffracton-free beams)横截面上的光强分布具有传播不变性,因而具有相当广泛的应用前景。介绍了无衍射光束及其特性,提出二元axicon的设计方法,并给出了计算机模拟的设计结果。

The diffraction-free beam produced by an axicon has constant size and intensity distributions. Therefore it could be exploited for practical use in many areas. The diffraction-free beam and its properties were introduced in this paper. Finally, the designing method of a binary axicon and computer based simulation results are presented.