Propagation characteristics of the modified circular Airy beam
Propagation characteristics of the modified circular Airy beam
复制标题
改进的圆形艾里光束的传播特性
DOI：
10.1364/oe.23.029834
复制
发表时间：
2015-11-16
期刊：
影响因子：
3.8
通讯作者：
Lu, Xuanhui
中科院分区：
文献类型：
--
作者：
Jiang, Yunfeng;Zhu, Xiuwei;Lu, Xuanhui
本文在修正圆艾里光束（CAB）傅里叶谱的基础上，提出了一种修正圆艾里光束（MCAB）。与大多数突然自动聚焦光束不同，MCAB的峰值强度位置可以移动到后面的任何环。引入两个切趾参数来描述MCAB的传输特性。结果表明，变迹参数对聚焦点的位置、轨迹和焦斑大小影响不大，但适当选取变迹参数，可显著提高突变自聚焦特性。与普通CAB和以前的封闭式CAB相比，MCAB具有更好的突变自聚焦特性。它可能在各个领域有更多的应用。(C)2015美国光学学会
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. (C) 2015 Optical Society of America