Recent years have witnessed a rapid development of sources for intense terahertz (THz)
pulses and an increasing number of their applications. The advent of laser pulses with …

A review is presented of recent works on optical unipolar pulses, whose electric area
(integral of the electric field strength over time) is nonzero, which determines the …

We perform an alternative approach to produce highly unipolar terahertz pulses. The idea is
based on the nonuniform amplification of seed ultrashort carrier-envelope phase (CEP) …

The most typical way to optically control population of atomic and molecular systems is to
illuminate them with radiation, resonant to the relevant transitions. Here we consider a …

Abstract Sub-10 attosecond pulses (APs) with half-cycle electric fields provide exceptional
options to detect and manipulate electrons in the atomic timescale. However, the availability …

We study the optical response of a resonant medium possessing nonlinear coupling to an
external field driven by a few-cycle pump pulse sequence. We demonstrate the possibility of …

Our recent studies of methods for obtaining ultrashort light pulses and analysis of the impact
of ultrashort optical pulses on classical and quantum micro-objects with the identification of …

We propose a strikingly simple method to form approximately unipolar half-cycle optical
pulses via reflection of a single-cycle optical pulse from a thin flat metallic or dielectric layer …

Methods recently proposed for generating unipolar pulses in nonlinear media in terahertz
and optical electromagnetic ranges are reviewed. Such pulses have nonzero “electric …

Terahertz (THz) radiation has attracted much attention due to its wide potential applications.
Though radiation can be generated with various ways, it is still a big challenge to obtain …