圆对称艾里光是一种特殊的无衍射光束,因其具有突然自聚焦的独特特性,所以备受研究者关注。首先,介绍了圆对称艾里光的基本概念和特性,然后,说明如何获得产生圆对称艾里光的计算全息图和计算全息的实现方式。在实验中获得了光强分布与理论相符,自聚焦效应显著的圆对称艾里光束。相对于常用的傅里叶空间生成的圆对称艾里光,计算全息生成的艾里光具有灵活调控振幅分布的优势。

Circular Airy beam is a kind of non-diffractive beams with special properties.It attracts many researchers to explore in depth due to its unique abruptly auto-focusing characteristic.This paper firstly introduces the basic concept and features of circular Airy beams.Then we illustrate how to obtain a hologram of circular Airy beam and implementation steps of computer generated hologram.In the experiment,generated circular airy beam’s intensity distribution is consistent with the theory,and its auto-focusing effect is remarkable.Comparing with the common ways that circular airy beams generated from Fourier-space,generating circular Airy beams by computer generated hologram has advantages for regulating amplitude distribution.