TY - JOUR
T1 - Photodissociation of H2+ in intense chirped laser fields
AU - Lin, J. T.
AU - Jiang, Tsin-Fu
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Regarding an experimental measurement of proton kinetic energy spectra of H2+ with a chirped pulse [L. J. Frasinski, J. H. Posthumus, J. Plumridge, and K. Colding, Phys. Rev. Lett. 83, 3625 (1999)], we present a nonperturbative, time-dependent calculation for the photodissociation of H2+ in intense laser fields by combining three numerical techniques. The results show a finer kinetic-energy distribution structure of a proton due to the intrapulse pump-dump mechanism between two electronic states as the pulse duration and intensity change. Higher-energy peaks are also suppressed by frequency chirping of the laser field. The dissociation probabilities show that a positively chirped pulse is always more efficient for population inversion than no chirping or negatively chirped pulses, and a slight coordinate shift of the initial state could result in a significant increase of dissociation probability.
AB - Regarding an experimental measurement of proton kinetic energy spectra of H2+ with a chirped pulse [L. J. Frasinski, J. H. Posthumus, J. Plumridge, and K. Colding, Phys. Rev. Lett. 83, 3625 (1999)], we present a nonperturbative, time-dependent calculation for the photodissociation of H2+ in intense laser fields by combining three numerical techniques. The results show a finer kinetic-energy distribution structure of a proton due to the intrapulse pump-dump mechanism between two electronic states as the pulse duration and intensity change. Higher-energy peaks are also suppressed by frequency chirping of the laser field. The dissociation probabilities show that a positively chirped pulse is always more efficient for population inversion than no chirping or negatively chirped pulses, and a slight coordinate shift of the initial state could result in a significant increase of dissociation probability.
UR - http://www.scopus.com/inward/record.url?scp=18344363242&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.63.013408
DO - 10.1103/PhysRevA.63.013408
M3 - Article
AN - SCOPUS:17744378947
VL - 63
SP - 1
EP - 10
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 2469-9926
IS - 1
M1 - 013408
ER -