Fig. 5: Theoretical and experimental proton distributions at 800 nm under different laser intensities.
From: All-optical steering on the proton emission in laser-induced nanoplasmas
a–e Calculated intensity-dependent near-field real-space proton distributions at 800 nm. The unit for the value indicated in the upper right corner of each image is TW cm−2. f–j and k–o are the calculated and measured far-field momentum distributions, respectively. A narrow proton emission within an angle range of ±14 degree is marked in (o). p The normalized angular distributions of the ion yields for various excitation strengths. The data at various intensities were multiplied by a factor for better illustration. q The peak emission angles as a function of the total ion yields. The red dashed line is obtained by a linear fitting based on the formula indicated in the figure. r, s Three-dimensional isosurface of the topological measurement results obtained at two typical laser intensities, ~30 and ~180 TW cm−2, respectively.
