Open AccessPropagation characteristics of the modified circular Airy beam
Author(s) -
Yunfeng Jiang,
Xiuwei Zhu,
Wenyan Yu,
Hehong Shao,
Wanting Zheng,
Xuequan Lu
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.029834
Subject(s) - apodization , optics , cardinal point , position (finance) , beam (structure) , physics , focal length , fourier transform , finance , quantum mechanics , economics , lens (geology)
We have proposed a kind of modified circular Airy beam (MCAB) based upon a modification of the Fourier spectrum of circular Airy beams (CAB) in this paper. Unlike most abruptly autofocusing beams, the position of peak intensity of MCAB can be moved to any rings behind. Two apodization parameters are introduced to describe the propagation characteristics of MCAB. It is found that the focal position, focal trajectory and the size of focal spot do not change with the apodization parameters; but the abruptly autofocusing property will be greatly enhanced if appropriately apodization parameters are chosen. Comparing with the common CAB and the previous blocked CAB, the MCAB shows better abruptly autofocusing property. It may have more applications in various fields.