|
|||||
|
|
Symmetric Swallowtail Beams in the Rectangle Frame |
|
| Authors: | Quanfeng Wei Junjie Jiang Zhenwu Mo Danlin Xu Xuezhen Cai Zehong Liang Jingyi Shi Haoyu Huang Dongmei Deng |
| Affiliation: | 1. School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006 China;2. School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006 China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, 510631 China |
| Abstract: | A new type of symmetric swallowtail beam (SSB) in the rectangle frame is introduced here. These kinds of beams are highly tunable with multiple manipulation parameters. The focal length and the focus intensity can be controlled precisely. The SSBs can guide the off-axis vortex to their center. And the experimental results agree well with the numerical simulations. Besides, stable trapping of particles by utilizing the SSBs' auto-focusing property and rectangle symmetry is also observed. |
| Keywords: | catastrophe optics swallowtail beams optical traps |