A new method is proposed to determine the time–frequency content of time-dependent
signals consisting of multiple oscillatory components, with time-varying amplitudes and …

The harmonics generated from the interaction of a strong laser field with atoms and
molecules in the gas phase can be applied as coherent light sources and detecting …

Near-and below-threshold harmonic generation provides a potential approach to generate
vacuum-ultraviolet frequency comb. However, the dynamical origin of in these lower …

We study the ionization and high-order harmonic generation (HHG) in argon by short
linearly polarized laser pulses. We compare the populations of atomic orbitals and HHG …

Although most digital representations of information sources are obtained by uniform
sampling of some continuous function representations, there are many important events for …

Motivated by the limitation of analyzing oscillatory signals composed of multiple components
with fast-varying instantaneous frequency, we approach the time-frequency analysis …

We present a theoretical study of the influence of resonant enhancement on quantum path
dynamics in the generation of harmonics above and below the ionization threshold in …

This work introduces and validates a model that explains an observed upper limitation of the
emission of below-threshold harmonics generated by noble gases bound electrons in a …

Recently, studies of high-order harmonics (HHG) from atoms driven by bichromatic counter-
rotating circularly polarized laser fields as a source of coherent circularly polarized extreme …

Among many of the nonlinear phenomena induced by strong laser pulses, two of the
important processes are the harmonic generation and the creation of neutral atoms in the …