Efficient generation of Bessel-Gauss attosecond pulse trains via nonadiabatic phase-matched high-order harmonics

Generating Bessel-Gauss beams in the extreme ultraviolet (EUV) with attosecond pulse durations poses a significant challenge due to the limitations of conventional transmission optical components. Here, we propose a novel approach to produce such beams by inducing an annular EUV source through high-order harmonic generation (HHG) under nonadiabatic phase-matching conditions. The resulting light pulse maintains temporal coherence and manifests attosecond pulse trains as confirmed by the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) measurements. Macroscopic HHG calculations reproduce the measured spatiotemporal structures, demonstrating the plasma-induced spatial modulation on the formation of an annular source. Propagation simulations further confirm the feasibility of this approach for generating attosecond Bessel-Gauss beams, presenting exciting prospects for various applications in EUV photonics and attosecond science.

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Publication Details

Journal
Light Science & Applications
Published
2025-05-06
DOI
https://doi.org/10.1038/s41377-025-01845-7
Citations
10
Primary Topic
Laser-Matter Interactions and Applications
Type
article
Field-Weighted Citation Impact
12.47

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article

Efficient generation of Bessel-Gauss attosecond pulse trains via nonadiabatic phase-matched high-order harmonics

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Light Science & Applications
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article

Efficient generation of Bessel-Gauss attosecond pulse trains via nonadiabatic phase-matched high-order harmonics

Sizuo Luo, Cheng Jin, Jun Cai, Mingxuan Li, Xiangyu Tang, Xinyue San, Pan Ma, Jialong Li, Dajun Ding, Jieda Zhang, Xinning Zhao, Huiyong Wang, Wentao Wang
article en
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Abstract

Generating Bessel-Gauss beams in the extreme ultraviolet (EUV) with attosecond pulse durations poses a significant challenge due to the limitations of conventional transmission optical components. Here, we propose a novel approach to produce such beams by inducing an annular EUV source through high-order harmonic generation (HHG) under nonadiabatic phase-matching conditions. The resulting light pulse maintains temporal coherence and manifests attosecond pulse trains as confirmed by the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) measurements. Macroscopic HHG calculations reproduce the measured spatiotemporal structures, demonstrating the plasma-induced spatial modulation on the formation of an annular source. Propagation simulations further confirm the feasibility of this approach for generating attosecond Bessel-Gauss beams, presenting exciting prospects for various applications in EUV photonics and attosecond science.

Light Science & ApplicationsVol. 14(1)
Jilin University (CN), Nanjing University of Science and Technology (CN)
National Natural Science Foundation of China, Nanjing University of Science and Technology, Nanjing University, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities
Openalex Percentile: Top 1%
Laser-Matter Interactions and Applications
12.47
DOIOpen Access PDFOpenAlex
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