| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5449027 | Optics Communications | 2017 | 4 Pages |
Abstract
The propagation characteristics of a circular Airy beam (CAB) with Fourier spectrum modified by high-pass, low-pass and band-pass filters (HCAB, LCAB and BCAB for short) are investigated in detail in this paper. Compared with a common CAB, the abruptly autofocusing property of the HCAB is greatly enhanced, while the focal position, focal trajectory and the size of the focal spot do not change. Similar to a CAB with a low-pass filter, a BCAB can form an optical needle but with a much stronger maximum intensity. Not only does the width of this optical needle decrease by half, but also the intensity gradient increases by eight times.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xiangquan Deng, Guoliang Zheng, Shixiang Xu, Qingyang Wu,