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A dynamic theory of mapping coherent molecular motions from high harmonic generation signals is presented. Application to mapping of coherent rotational motions of linear molecules is made. Results of concrete calculations for N2, O2 and CO2 are analyzed both in time and frequency domains. A “magic angle” for the polarization geometry is predicted at which the HHG signals for all pump-probe delay...
In this paper we report the results of angle-dependent HHG from aligned molecules that have been observed at a low Trot of N2 and O2, which lead to a possible imaging of the characteristic molecular structure and dynamics.
High-order harmonic generation from field-free aligned molecules has been measured as a function of the angle between polarization directions of femtosecond pump and probe pulses. The results are compared with the recent theoretical prediction for N2, O2 and CO2 molecules.
A general theory of molecular high harmonic generation in intense femtosecond pump-probe experiments is presented. It provides explicit analytical expressions correlating the harmonic signals with the dynamical alignment of linear molecules. Recent experimental data from pump-probe experiments are analyzed and a unified interpretation of the diverse observations is given.
This paper discusses rotational coherence created in wave packets of N2, O2 and CO2 with intense ultrashort laser pulses and observed with high-order harmonic generation. We identify the origin of several sets of frequency component included in the time-dependent harmonic signal and its effect on the revival structure.
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