All-optical steering on the proton emission in laser-induced nanoplasmas

Fenghao Sun, Qiwen Qu, Hui Li (), Shicheng Jiang (), Qingcao Liu, Shuai Ben, Yu Pei, Jiaying Liang, Jiawei Wang, Shanshan Song, Jian Gao, Weifeng Yang, Hongxing Xu and Jian Wu ()
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Fenghao Sun: East China Normal University
Qiwen Qu: East China Normal University
Hui Li: East China Normal University
Shicheng Jiang: East China Normal University
Qingcao Liu: Harbin Institute of Technology
Shuai Ben: Hainan University
Yu Pei: Hainan University
Jiaying Liang: Hainan University
Jiawei Wang: East China Normal University
Shanshan Song: East China Normal University
Jian Gao: East China Normal University
Weifeng Yang: Hainan University
Hongxing Xu: East China Normal University
Jian Wu: East China Normal University

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract Nanoplasmas induced by intense laser fields have attracted enormous attention due to their accompanied spectacular physical phenomena which are vigorously expected by the community of science and industry. For instance, the energetic electrons and ions produced in laser-driven nanoplasmas are significant for the development of compact beam sources. Nevertheless, effective confinement on the propagating charged particles, which was realized through magnetic field modulation and target structure design in big facilities, are largely absent in the microscopic regime. Here we introduce a reliable scheme to provide control on the emission direction of protons generated from surface ionization in gold nanoparticles driven by intense femtosecond laser fields. The ionization level of the nanosystem provides us a knob to manipulate the characteristics of the collective proton emission. The most probable emission direction can be precisely steered by tuning the excitation strength of the laser pulses. This work opens new avenue for controlling the ion emission in nanoplasmas and can vigorously promote the fields such as development of on-chip beam sources at micro-/nano-scales.

Date: 2024
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DOI: 10.1038/s41467-024-49569-3

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