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- Title
All-optical steering on the proton emission in laser-induced nanoplasmas.
- Authors
Sun, Fenghao; Qu, Qiwen; Li, Hui; Jiang, Shicheng; Liu, Qingcao; Ben, Shuai; Pei, Yu; Liang, Jiaying; Wang, Jiawei; Song, Shanshan; Gao, Jian; Yang, Weifeng; Xu, Hongxing; Wu, Jian
- 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. Scientists have gained a fundamental insight into the ultrafast dynamics in nanoplasma formation and relaxations, yet the effective control on the emission behaviors of nanoplasma, is still lacking. Here, the authors report the experimental realization of well-controlled ion emission from transient nanoplasmas induced by intense femtosecond laser pulses.
- Subjects
FEMTOSECOND pulses; PHENOMENOLOGICAL theory (Physics); ION emission; PROTONS; EMISSION control; LASER pulses
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-49569-3