Author(s):

Tao Geng and Xiuxiang Zhang

Abstract:

“We theoretically and experimentally study the propagation properties of the circular
Airy beam (CAB) with a Gaussian envelope in Fourier space. The two parameters of the Gaussian
function can be used to control the distribution of the spatial frequency, and thus to tune the
propagation properties of this modified CAB. When the two parameters are chosen appropriately,
the size of focal spot will be reduced, the maximum focal intensity and especially the abruptly
autofocusing property will be greatly enhanced. Meanwhile, the focal position can remain almost
the same with the common CAB. The experimental results show that the proposed beam can
be generated conveniently by using the same Fourier transform method as used to generate the
common CAB.”

Link to Publications Page

Publication: Optics Express

Issue/Year/DOI: Vol. 28, Issue 2, pp. 2447-2455
DOI: 10.1364/OE.384143