27-fs extreme ultraviolet pulse generation by high-order harmonics.
Autocorrelation measurement was demonstrated for the first time to our knowledge in the XUV region to measure the width of a high-order harmonic pulse. Two-photon ionization of rare gases was used as a nonlinear process for the autocorrelation measurement. The 27-fs pulse width that was obtained is, to our knowledge, the shortest in the XUV region.
Kobayashi
Y
Y
Sekikawa
T
T
Nabekawa
Y
Y
Watanabe
S
S