All-optical edge-enhanced proton imaging driven by an intense vortex laser

Wang, W. P.; Dong, H.; Shi, Zhiyong; Jiang, Ching-Long; Xu, Yi; Zhang, Z. X.; Wu, Fenxiang; Hu, Jiabing; Qian, Jia; Zhu, Jianqiang; Liang, Xiaoyan; Leng, Yuxin; Li, R. X.; Xu, Zhizhan

doi:10.1063/5.0139884

Cited by 3 publications

(1 citation statement)

References 80 publications

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“…An optimum pulse duration of 150 fs is found in our case, which explains the different proton collimation accelerations between femtosecond and picosecond LG lasers in previous experiments and simulations. Our researches give insights into understanding the beam formation mechanism driven by LG lasers, which is beneficial for a wide range of applications, such as proton induced x-ray emission [39], proton probe [40][41][42], fast ignition [17,43], tumor therapy [19,44], neutron source [45][46][47][48], astrophysical jet research [49][50][51], and proton imaging [52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Optimal collimation of proton beams accelerated by a Laguerre–Gaussian laser with a proper pulse duration

Wang,

Shi

et al. 2024

Plasma Phys. Control. Fusion

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In this study, three-dimensional particle-in-cell (PIC) simulations were conducted to evaluate a collimated proton beam accelerated by an intense Laguerre-Gaussian (LG) laser with different pulse widths. The flux and energy of the collimated proton beam could be simultaneously enhanced by selecting an optimal pulse width. This phenomenon can be primarily attributed to the correlation between the LG laser driven self-generated magnetic field and pulse width, and this correlation enables the collimation of protons during their interaction and transport. The results obtained in this study elucidate the formation mechanism of different collimated proton patterns, driven by femtosecond and picosecond LG lasers, observed in previous experiments. In addition, based on these results, an optimum pulse width for high-quality proton beams is proposed for various future applications.

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Section: Introductionmentioning

confidence: 99%

Optimal collimation of proton beams accelerated by a Laguerre–Gaussian laser with a proper pulse duration

Wang,

Shi

et al. 2024

Plasma Phys. Control. Fusion

Self Cite

View full text Add to dashboard Cite

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Generation of ultra-intense vortex laser from a binary phase square spiral zone plate

Zhang,

Huang

et al. 2024

Opt. Express

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With the development of ultra-intense laser technology, the manipulation of relativistic laser pulses has become progressively challenging due to the limitations of damage thresholds for traditional optical devices. In recent years, the generation and manipulation of ultra-intense vortex laser pulses by plasma has attracted a great deal of attention. Here, we propose a new scheme to produce a relativistic vortex laser. This is achieved by using a relativistic Gaussian drive laser to irradiate a plasma binary phase square spiral zone plate (BPSSZP). Based on three-dimensional particle-in-cell (3D-PIC) simulations, we find that the drive laser has a phase difference of π after passing through the BPSSZP, ultimately generating the vortex laser with unique square symmetry. Quantitatively, by employing a drive laser pulse with intensity of 1.3 × 1018~W/cm2, a vortex laser with intensity up to 1.8 × 1019~W/cm2, and energy conversion efficiency of 18.61% can be obtained. The vortex lasers generated using the BPSSZP follow the modulo-4 transmutation rule when varying the topological charge of BPSSZP. Furthermore, the plasma-based BPSSZP has exhibited robustness and the ability to withstand multiple ultra-intense laser pulses. As the vortex laser generated via the BPSSZP has high intensity and large energy conversion efficiency, our scheme may hold potential applications in the community of laser-plasma, such as particles acceleration, intense high-order vortex harmonic generation, and vortex X/γ-ray sources.

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Generation of attosecond electron bunches of tunable duration and density by relativistic vortex lasers in near-critical density plasma

Zhang,

Hu,

Cao

et al. 2024

Opt. Express

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Attosecond electron bunches have wide application prospects in free-electron laser injection, attosecond X/γ-ray generation, ultrafast physics, etc. Nowadays, there is one notable challenge in the generation of high-quality attosecond electron bunch, i.e., how to enhance the electron bunch density. Using theoretical analysis and three-dimensional particle-in-cell simulations, we discovered that a relativistic vortex laser pulse interacting with near-critical density plasma can not only effectively concentrate the attosecond electron bunches to over critical density, but also control the duration and density of the electron bunches by tuning the intensity and carrier-envelope phase of the drive laser. It is demonstrated that this method can efficiently produce attosecond electron bunches with a density up to 300 times of the original plasma density, peak divergence angle of less than 0.5∘, and duration of less than 67 attoseconds. Furthermore, by using near-critical density plasma instead of solid targets, our scheme is potential for the generation of high-repetition-frequency attosecond electron bunches, thus reducing the requirements for experiments, such as the beam alignment or target supporter.

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All-optical edge-enhanced proton imaging driven by an intense vortex laser

Cited by 3 publications

References 80 publications

Optimal collimation of proton beams accelerated by a Laguerre–Gaussian laser with a proper pulse duration

Optimal collimation of proton beams accelerated by a Laguerre–Gaussian laser with a proper pulse duration

Generation of ultra-intense vortex laser from a binary phase square spiral zone plate

Generation of attosecond electron bunches of tunable duration and density by relativistic vortex lasers in near-critical density plasma

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