Geometry of spiral beams: 3D curved structured vortex beams and optical currents

被引：7
|
作者：
Volyar, A. V. [1 ]
Abramochkin, E. G. [2 ]
Razueva, E., V [2 ]
Bretsko, M., V [1 ]
Akimova, Ya E. [1 ]
机构：
[1] VI Vernadsky Crimean Fed Univ, Vernadsky Prospect 4, Simferopol 295007, Russia
[2] Lebedev Phys Inst, Samara 443011, Russia
来源：
JOURNAL OF OPTICS | 2021年 / 23卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
optical vortices; twisting beams; optical currents; paraxial beams;
D O I：
10.1088/2040-8986/abed5c
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Our research concerns the problem of constructing multiple-twisted spiral beams and the geometry of their fine structure. We analyzed the distribution of energy flows in triangular spiral beams and critical points' positions responsible for their structural stability. It was shown experimentally that a three-spot beam propagates without breaking the internal structure, while the intricate framing of a multiple-twisted triangular beam is distorted beyond the Rayleigh length. We associate such a structural violation with the imperfection of the holographic grating in the spatial light modulator.
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收藏
页数：9
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