高鹏慧,李晋红,郭苗军,田文艳.高阶相干涡旋和光涡旋的动态演化和传输轨迹[J].光电子激光,2016,27(7):773~781 |
高阶相干涡旋和光涡旋的动态演化和传输轨迹 |
Dynamic evolution and propagation trajectory of the higher-order coherent vorti ces and optical vortices |
投稿时间:2015-12-17 |
DOI: |
中文关键词: 相干涡旋 光涡旋 拓扑荷 大气湍流 拉盖尔-高斯(LG)光束 |
英文关键词:coherent vortices optical vortices topological charge atmospheric turbulence Laguerre-Gaussian (LG) beams |
基金项目:国家自然科学基金(61405136,8,11547211)和山西省基础研究计划(2013021010-4)资助项目 (太原科技大学 物理系,山西 太原 030024) |
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中文摘要: |
基于广义惠更斯-菲涅耳原理,以拉盖尔-高斯(LG,Laguerre-Gaussian)光束为例,详细研究了高阶相干涡 旋、高阶光涡旋在自由空间、大气湍流中的动态演化和传输轨迹。研究表明,拓扑荷为+m 的高阶相干涡旋在自由空 间和大气湍流传输中均演化为m个拓扑荷为+1的相干涡旋;高阶光涡旋在自由 空间传输中不分裂,且随传输距离的 增加高阶光涡旋的位置不发生变化;拓扑荷为+m的高阶光涡旋在大气湍流传输中演化为m 个拓扑荷为+1的光涡旋; 光场的部分相干性和大气湍流的扰动都会诱导高阶相干涡旋发生分裂。所得结论,在光涡旋 通信系统有潜在应用价值。 |
英文摘要: |
Based on the generalized Huygens-Fresnel principle,taking the Laguer re-Gaussian (LG) beams as an example,the dynamic evolution and propagation trajectory of the higher-order coherent vorti ces and the higher-order optical vortices are studied in free space and atmospheric turbulence.The results show that the higher-order coherent vortices with topological charge of +m break down into m coherent vo rtices with topological charge of +1through propagation in free space and atmos pheric turbulence;the higher-order optical vortices are not broken down in free space,and the position of the high er-order optical vortices remains unchanged with the increase of propagation d istance;the higher-order optical vortices with top ological charge of +m break down into m ones with +1through propagation in atmospheric turbulence; both the pa rtial coherence of optical field and disturbance of atmospheric turbulence induce higher-order coherent vortices to break down.The se results will be beneficial for designing and developing the optical vortex co mmunication systems. |
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