Researchers at SwissFEL have successfully demonstrated new technologies that improve the temporal coherence of XFEL pulses
X-ray free-electron lasers produce pulses of light that are exceptionally bright, making them powerful tools for studying ultrafast chemical reactions, biological processes, or probing the structure of materials at atomic scales.
However, these pulses are noisy in time and frequency due to the way the light is generated through a process known as self-amplified spontaneous emission, or SASE for short: i.e., the pulses are not temporally coherent.
This spectral randomness can be a limitation for experiments requiring ultra-high spectral control to follow electron and structural dynamics.
In true Swiss style, researchers at SwissFEL have now found a way to make the light neat and orderly.
Read more on PSI website