Photon echo using imperfect x-ray pulse with phase fluctuation
Photon echo using imperfect x-ray pulse with phase fluctuation
We study the impact of inter-pulse phase fluctuation in free-electron X-ray laser on the signal in the photon echo spectroscopy, which is one of the simplest non-linear spectroscopic methods. A two-pulse echo model is considered with two-level atoms as the sample. The effect of both fluctuation amplitude and correlation strength …