Achieving collimation of high-energy, high-flux proton beams relies on complex target fabrication and precise control of auxiliary laser pulses. Here, the authors demonstrate an all-optical method for collimated proton acceleration using a single femtosecond Laguerre–Gaussian (LG), enhancing the proton energy by 60% and using a simple planar target.
- Wenpeng Wang
- Xinyue Sun
- Zhizhan Xu
