Characterizing the polarization and cross-polarization of electromagnetic vortex pulses in the space-time and space-frequency domain

被引：8
|
作者：
Luo, Meilan [1 ]
Zhao, Daomu [1 ]
机构：
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 04期
基金：
中国国家自然科学基金;
关键词：
PARTIALLY COHERENT PULSES; DISPERSIVE MEDIA; BEAMS; PROPAGATION;
D O I：
10.1364/OE.23.004153
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The dynamics of the degree of polarization and the degree of cross-polarization for electromagnetic pulsed vortex beams in dispersive media are explored both in the space-time and space-frequency domains. It is shown that the impacts, arising from the second-order dispersion coefficient and the temporal coherence length, on the variations of the temporal degree of polarization are distinctly different from those on the spectral degree of polarization. Besides, we also suggest a method to access the measurement of the orbital angular momentum of pulsed vortex beams through the mapping relationship between the distribution of the temporal degree of cross-polarization and the number of topological charge. (C) 2015 Optical Society of America
引用
收藏
页码：4153 / 4162
页数：10
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