XUV frequency combs via femtosecond enhancement cavities
XUV frequency combs via femtosecond enhancement cavities
We review the current state of tabletop extreme ultraviolet (XUV) sources based on high harmonic generation (HHG) in femtosecond enhancement cavities (fsEC).Recent developments have enabled generation of high photon flux (10 14 photons/sec) in the XUV, at high repetition rates (>50 MHz) and spanning the spectral region from 40 nm …