Fig. 4: Simulation results of the PSO to maximize the spectral power in two independent spectral intervals according to Eq. (2).

a Example (Δλ = 50 nm, λt,1 = 1300 nm, λt,2 = 2200 nm) of an optimized output spectrum (solid line) compared to the configuration at room temperature (dashed line). The light red areas indicate the optimization intervals. b Corresponding spatio-spectral pulse evolution using the optimized dispersion distribution. The curves in a and b are normalized to the maximum power of the input pulse. The white dashed lines indicate the evolution of the ZDWs. c Corresponding temperature distribution. The vertical black dashed line indicates the minimum and maximum possible temperatures. d, e Enhancement factor of interval 1 and 2, respectively, for different combinations of target wavelengths (Δλ = 50 nm). The highlighted tile represents the example shown in a. Note that the absence of data in the lower right part of the plot is due to combinatorial reasons. f Mean enhancement factor for different combinations of target wavelengths (Δλ = 50 nm). g Power contrast showing the difference in the final spectral power of the intervals.