Fig. 1: Experimental setup.
From: Enhanced proton acceleration via Petawatt Laguerre–Gaussian lasers
a The incident Gaussian laser passes through the phase plate to generate LG laser, which is then focused on the target by an off-axis parabolic mirror. The proton mass is detected by the RCF and IP. b Design of the reflective 32-step phase plate. c Measured spectrum after the final amplifier. The central wavelength of the laser is λ0 = 800 nm, and the laser bandwidth is Δλ = 60 nm. The intensity distributions of the laser focal spot of the (d) LG and (e) Gaussian lasers. The intensity profile across the laser center is marked by red lines (TP: Thomson parabola; IP: image plate; RCF: radiation chromic film).
