The temporal characterization of ultrafast laser pulses has become a cornerstone capability
of ultrafast optics laboratories and is routine both for optimizing laser pulse duration and …

Propagation and reflection of electromagnetic waves in time-varying dielectric media are
studied using analytic solutions of the relevant Maxwell equations. Exactly solvable models …

Ammonia nitrogen contaminated wastewater has posed great threat on the safety of water
resources. In this study, a novel process, microwave (MW) radiation, was developed for the …

Paraxial Gaussian beams (GB's) are collimated wave objects that have found wide
application in optical system analysis and design. A GB propagates in physical space …

Basic concepts of three-dimensional wave packets are applied to the description of
transverse effects on the propagation of ultrashort (femtosecond) pulses. The frequency …

State-of-the-art numerical simulations of quantum electrodynamical (QED) processes in
strong laser fields rely on a semiclassical combination of classical equations of motion and …

We show how to transform the mathematical expression of any monochromatic paraxial light
beam into the expression of a pulsed beam whose diffraction is switched from the axial …

Introducing a spatial chirp into a pulse with a longitudinal vortex, such as a standard pulsed
Laguerre–Gauss beam, results in a vortex pulse with an arbitrary orientation of the phase …

The characterization of ultrashort laser pulses has significantly advanced beyond the
standard spatial and temporal diagnostics to now include sophisticated spatio-temporal …

We study a family of nonseparable solutions of the three-plus-one-dimensional paraxial
wave equation in free space that represent ultrashort waveforms localized in time and …