Direct observation of Gouy phase shift in a propagating optical vortex
Direct observation of Gouy phase shift in a propagating optical vortex
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DOI：
10.1364/oe.14.008382
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发表时间：
2006-09-04
期刊：
影响因子：
3.8
通讯作者：
Morita, Ryuji
中科院分区：
文献类型：
--
作者：
Hamazaki, Junichi;Mineta, Yuriya;Morita, Ryuji
通过研究具有非对称缺陷的修正LG(P)(M)光束在焦点处的光强分布，直接观测到光学涡旋上的Gouy相移。此外，发现缺陷的三维轨迹描述了一条均匀的直线。定量地发现，修正的LG(P)(M)光束的旋转轮廓表现出Gouy位相效应，旋转方向只取决于拓扑电荷m的符号。这种引入非对称缺陷的轮廓测量方法是一种简单实用的获得Gouy相移信息的方法，不需要传统的干涉方法。(C)2006年美国光学学会
Direct observation of Gouy phase shift on an optical vortex was presented through investigating the intensity profiles of a modified LG(p)(m) beam with an asymmetric defect, around at the focal point. In addition, the three-dimensional trajectory of the defect was found to describe a uniform straight line. It was quantitatively found that the rotation profile of a modified LG(p)(m) beam manifests the Gouy phase effect where the rotation direction depends on only the sign of topological charge m. This profile measurement method by introducing an asymmetric defect is a simple and useful technique for obtaining the information of the Gouy phase shift, without need of a conventional interference method. (c) 2006 Optical Society of America