High-order vortex harmonic generation with circular Airy vortex beams

被引：2
|
作者：
Shen, Fengbei [1 ]
Pang, Zeyue [1 ]
Wang, Chunya [1 ]
Hong, Weiyi [1 ]
机构：
[1] South China Normal Univ, Guangdong Prov Key Lab Nanophoton Funct Mat & Devi, Guangzhou 510631, Peoples R China
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2023年 / 40卷 / 02期
基金：
中国国家自然科学基金;
关键词：
ORBITAL ANGULAR-MOMENTUM; WATER-WINDOW; RADIATION; LIGHT;
D O I：
10.1364/JOSAB.480843
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
High-order harmonic generation (HHG) driven by an abruptly autofocusing circular Airy vortex beam (CAiVB) is investigated here. The autofocusing property of the CAiVB gives HHG a low initial intensity. The slow divergence after focusing provides a long and sufficiently intense region, which is favorable for HHG. Here, we analyze the phase-matching mechanism in detail by plotting the spatial diagram of the coherence length, while simulating HHG driven by the CAiVB carrying distinct orbital angular momentum in a gas medium, as well as the harmonic distributions in the near and far fields.(c) 2023 Optica Publishing Group
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页码：398 / 405
页数：8
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