TY - JOUR
T1 - Interplay of electron heating and saturable absorption in ultrafast extreme ultraviolet transmission of condensed matter
AU - Di Cicco, Andrea
AU - Hatada, Keisuke
AU - Giangrisostomi, Erika
AU - Gunnella, Roberto
AU - Bencivenga, Filippo
AU - Principi, Emiliano
AU - Masciovecchio, Claudio
AU - Filipponi, Adriano
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/15
Y1 - 2014/12/15
N2 - High intensity pulses obtained by modern extreme ultraviolet (EUV) and x-ray photon sources allows the observation of peculiar phenomena in condensed matter. Experiments performed at the Fermi@Elettra FEL-1 free-electron-laser source at 23.7, 33.5, and 37.5 eV on Al thin films, for an intermediate-fluence range up to about 20J/cm2, show evidence for a nonmonotonic EUV transmission trend. A decreasing transmission up to about 5-10J/cm2 is followed by an increase at higher fluence, associated with saturable absorption effects. The present findings are interpreted within a simplified three-channel model, showing that an account of the interplay between ultrafast electron heating and saturation effects is required to explain the observed transmission trend.
AB - High intensity pulses obtained by modern extreme ultraviolet (EUV) and x-ray photon sources allows the observation of peculiar phenomena in condensed matter. Experiments performed at the Fermi@Elettra FEL-1 free-electron-laser source at 23.7, 33.5, and 37.5 eV on Al thin films, for an intermediate-fluence range up to about 20J/cm2, show evidence for a nonmonotonic EUV transmission trend. A decreasing transmission up to about 5-10J/cm2 is followed by an increase at higher fluence, associated with saturable absorption effects. The present findings are interpreted within a simplified three-channel model, showing that an account of the interplay between ultrafast electron heating and saturation effects is required to explain the observed transmission trend.
UR - http://www.scopus.com/inward/record.url?scp=84918786345&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.90.220303
DO - 10.1103/PhysRevB.90.220303
M3 - 学術論文
AN - SCOPUS:84918786345
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220303
ER -