Computer simulation techniques for extreme nonlinear optics are reviewed with emphasis
on the high light-intensity regimes in which both bound and freed electronic states contribute …

We discuss the connection between strong-field ionization, saturation of the Kerr response
and the formation of the Kramers–Henneberger (KH) atom and long-living excitations in …

Nonlinear optics experiments measuring phase shifts induced in a weak probe pulse by a
strong pump pulse must account for coherent effects that only occur when the pump and …

We report a new regime of filamentation in water in tight focusing geometry, very similar to
the so-called superfilamentation seen in air. In this regime there is no observable conical …

The exact quantum time-dependent optical response of hydrogen under strong-field near-
infrared excitation is investigated and compared to the perturbative model widely used for …

Calculations are performed of the phase shift caused by the spatial modulation in the
plasma density due to interference between a strong pump pulse and a weak probe pulse. It …

A systematic research on intensity clam** phenomenon was conducted both in air and
argon by using a TW level femtosecond laser. Though the laser peak power was increased …

Under certain conditions, powerful ultrashort laser pulses can form greatly extended,
propagating filaments of concentrated high intensity in gases, leaving behind a very long …

We investigated the evolution of femtosecond laser pulses at different wavelengths
corresponding to normal, zero, and anomalous regimes of group velocity dispersion (GVD) …

As previous theoretical results recently revealed, a Kramers-Kronig transform of multiphoton
absorption rates allows for a precise prediction on the dispersion of the nonlinear refractive …