Dynamic two-center interference in high-order harmonic generation from molecules with attosecond nuclear motion.
We report a new dynamic two-center interference effect in high-harmonic generation from H2, in which the attosecond nuclear motion of H2+ initiated at ionization causes interference to be observed at lower harmonic orders than would be the case for static nuclei. To enable this measurement we utilize a recently developed technique for probing the attosecond nuclear dynamics of small molecules. The experimental results are reproduced by a theoretical analysis based upon the strong-field approximation which incorporates the temporally dependent two-center interference term.
Baker
S
S
Department of Physics, Imperial College London, London, United Kingdom. sarah.baker@imperial.ac.uk
Robinson
J S
JS
Lein
M
M
Chirilă
C C
CC
Torres
R
R
Bandulet
H C
HC
Comtois
D
D
Kieffer
J C
JC
Villeneuve
D M
DM
Tisch
J W G
JW
Marangos
J P
JP