Comparison of the cases WH and HW. a) Dependence of the final burst properties on the pulse number. Filt. Energy: Filtered burst energy, normalized to the total energy of the initial unfiltered pulses. Peak Intensity: Burst spectral peak intensity normalized to the spectral peak intensity at N = 100. FWFN bandwidth: Full-Width-at-Full-Null width of the center spectral peak. (b), (c) Exemplary spectra at N = 10 pulses of the (b) WH case. (c) HW case.