Researchers at SwissFEL succeed in improving the temporal coherence of XFEL pulses (IMAGE)
Caption
Left: A standard SwissFEL pulse. Middle: Researchers created tuneable frequency combs in the X-rays pulses from SwissFEL. The lines in the spectrum show the ‘teeth’ of the comb, where the light is emitted at distinct frequencies. Right: They then collapsed the frequency combs into a single, ultra-bright tooth, with a width reduced to one-third of that of a standard XFEL pulse.
Credit
Paul Scherrer Institute / Eduard Prat
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