Theoretical study of the femtosecond-resolved photoelectron spectrum of the NO molecule

The effect of laser fields on the NO interaction potentials is obtained by the calculation of time-resolved photoelectron spectrum (TRPES) using the time-dependent wave-packet method. The calculation not only shows that the overlap of the pump-probe pulses makes some NO molecular 'invisible...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-06, Vol.67 (6), Article 063202
Main Authors: Meng, Qing-Tian, Yang, Guang-Hui, Sun, Hai-Lin, Han, Ke-Li, Lou, Nan-Quan
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
COUPLING
ELECTRON SPECTRA
LASER RADIATION
MOLECULES
MULTI-PHOTON PROCESSES
NITRIC OXIDE
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON-MOLECULE COLLISIONS
POTENTIALS
PROBES
PULSES
TIME DEPENDENCE
TIME RESOLUTION
WAVE PACKETS
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Summary:The effect of laser fields on the NO interaction potentials is obtained by the calculation of time-resolved photoelectron spectrum (TRPES) using the time-dependent wave-packet method. The calculation not only shows that the overlap of the pump-probe pulses makes some NO molecular 'invisible' states visible, but also that the coupling strength and the positions of relevant curves change on increasing the laser intensity. These changed potentials affect their dynamical behavior and influence the shape and position of each peak in TRPES. That the coupling strength of relevant potentials can be changed by the field-matter interaction is consistent with our ab initio calculations.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.67.063202