We numerically study the propagation of a few-cycle pulse carrying orbital angular
momentum (OAM) through a dense atomic system. Nonlinear precursors consisting of high …

We describe the observation of a sharp leading-edge spike in a biphoton wave packet that is
produced using slow light and measured by two-photon correlation. Using the stationary …

A scheme for separating optical precursors from a square-modulated laser pulse through an
asymmetric double Al x Ga 1-x As/GaAs quantum-well structure via resonant tunneling is …

We report theoretical and experimental studies of the propagation of a square-modulated
laser pulse through a laser-cooled atomic ensemble of two-level absorbers, as well as …

We theoretically study the stacked optical transients generated from a series of square
pulses passing through a cold atomic ensemble. Using the hybrid analysis and fast Fourier …

We observed optical precursors in four-wave mixing based on a cold-atom gas. Optical
precursors appear at the edges of pulses of the generated optical field, and propagate …

We study, numerically, the transitional behavior of precursors in the intermediate spectral
regime between two contrasting regimes for which analytical solutions exist. The two …

We observe interference between the optical precursors and the main signal for small
optical depth α0 L∼ 1, in which the main signal cannot be entirely absorbed. Since the main …

We present a new controllable superflash, a maximum transient peak at the falling edge of a
square pulse, using a three-level electromagnetically induced transparency (EIT). The …

We investigate optical precursors transmitted through a double-Lorentz dielectric consisting
of two adjacent narrow resonances. Compared to the patterns in a single-Lorentz dielectric …