Abstract
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.
Funder
Natural Science Foundation of Guangdong Province
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Statistical and Nonlinear Physics
Cited by
1 articles.
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