Optical vortex shaping via a phase jump factor
Optical vortex shaping via a phase jump factor
复制标题
通过相位跳跃因子进行光学涡旋整形
DOI：
10.1364/ol.44.001379
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发表时间：
2019-03-15
期刊：
影响因子：
3.6
通讯作者：
Cai, Yangjian
中科院分区：
文献类型：
--
作者：
Ma, Haixiang;Li, Xinzhong;Cai, Yangjian
光学涡旋(OV)的拓扑电荷(TC)是一个重要参数。通过对TC定义积分的展开，提出了两个因子，即相位跳跃因子和相位梯度因子来代替TC参数。基于这两个因素，我们报道了一种新的光学涡旋，称为剩余相位光学涡旋(ROV)。通过调整这两个因素，对ROV的性能进行了深入的研究。结果表明，位相梯度因子决定总轨道角动量(OAM)，而位相跳跃因子决定分裂单位涡数，重塑OAM分布结构。这项工作提供了一种新型的OAM分布可控的OV，这将为粒子操纵、光束整形和微制造等开辟新的应用。(C)2019年美国光学学会
Topological charge (TC) of an optical vortex (OV) is a crucial parameter. We propose two factors, namely, the phase jump factor and the phase gradient factor, to replace the parameter of TC through unwrapping the TC definition integral. Based on these two factors, we report on a novel OV, referred to as the remainder-phase optical vortex (ROV). The properties of the ROV are studied in depth by adjusting these two factors. Results show that the phase gradient factor determines the total orbital angular momentum (OAM), whereas the phase jump factor decides the number of split unit vortices and reshapes the structure of the OAM distribution. This work provides a novel OV with controllable OAM distribution, which will open up new applications such as particle manipulation, beam shaping, and micro-fabrication. (C) 2019 Optical Society of America