Opt Lett. 2018 Aug 1;43(15):3626-3629. doi: 10.1364/OL.43.003626.
We introduce a new class of (2+1) dimensional circle Pearcey beams (CPBs) with the abruptly autofocusing (AAF) characteristics. Compared with circular Airy beams, CPBs can increase the peak intensity contrast, shorten the focus distance and, especially, eliminate the oscillation after the focal point. Furthermore, we discuss the influence of the optical vortices (including on-axis, off-axis, and vortex pairs) on the light intensity distribution of the CPBs during propagating.
我们提出了一类具有突变自聚焦（AAF）特性的（2+1）维圆 Pearcey 光束（CPB）。与圆形 Airy 光束相比，CPB 可以提高峰值强度对比度，缩短聚焦距离，特别是消除焦点后的振荡。此外，我们还讨论了在传播过程中，光涡旋（包括轴上、轴外和涡旋对）对 CPB 光强分布的影响。
