Chen Xingyu, Deng Dongmei, Wang Guanghui, Yang Xiangbo, Liu Hongzhan
Opt Lett. 2019 Feb 15;44(4):955-958. doi: 10.1364/OL.44.000955.
In this Letter, we introduce a new class of abruptly autofocued and rotated circular chirp Pearcey Gaussian vortex beams (AARCCPGVBs) which tend to abruptly autofocused circular chirp Pearcey vortex beams or chirp Gaussian vortex beams by adjusting the spatial distribution factors. Different from other rotated beams [Opt. Lett.31, 694 (2006) OPLEDP0146-959210.1364/OL.31.000694 and Opt. Lett.31, 2199 (2006)OPLEDP0146-959210.1364/OL.31.002199], the AARCCPGVBs are autofocused abruptly, maintain a low rotating speed before the focal point, and rotate abruptly and quickly in the focal point. Further, the position of the focal point in the propagating direction can also be controlled by adjusting the chirp factor.
在本信函中，我们介绍了一类新型的突然自聚焦且旋转的圆啁啾皮尔斯高斯涡旋光束（AARCCPGVBs），通过调整空间分布因子，它们倾向于转变为突然自聚焦的圆啁啾皮尔斯涡旋光束或啁啾高斯涡旋光束。与其他旋转光束[《光学快报》31, 694 (2006) OPLEDP0146 - 959210.1364/OL.31.000694以及《光学快报》31, 2199 (2006) OPLEDP0146 - 959210.1364/OL.31.002199]不同，AARCCPGVBs会突然自聚焦，在焦点之前保持较低的旋转速度，并在焦点处突然且快速地旋转。此外，还可通过调整啁啾因子来控制焦点在传播方向上的位置。
