Partial Coherence Simulation

In order to simulate the temporal and spectral distribution of SASE pulses there is an easy way based random fluctuations filtered spectrally and temporally.

The only input parameters are the center wavelength, spectral bandwidth and the pulse duration.

Below you can find a python implementation (by Martin Beye and Christopher Passow) of the partial coherence method as described in:

• Thomas Pfeifer et al. Partial-coherence method to model experimental free-electron laser pulse statistics, Opt. Lett. 35, 3441-3443 (2010); link to the paper
• and here a paper comparing the model to advanced simulations and experiments I. Bermudez et al Optics Express 29, 10491 (2021)

Examples:

CentralEnergy=80 # in eV

bandwidth=0.5 # bandwidth in %

dt_FWHM=10, 30., 70  # FWHM of the temporal duration on average

offline version:

simulating_SASE_pulses.ipynb