In this roadmap article, we have focused on the most recent advances in terahertz (THz)
imaging with particular attention paid to the optimization and miniaturization of the THz …

We review the generation of broadband THz radiation from femtosecond photo‐induced gas
plasmas, with an emphasis on the highly efficient “AC‐bias” case where the plasma is …

In this paper techniques for the generation and measurement of ultrashort pulses in the
frequency range from about 0.1 to 10 THz are reviewed. The methods for generation are …

It is now possible to generate terahertz (THz) pulses with sufficient energy and field
amplitude to enable versatile applications in THz nonlinear optics and spectroscopy. In …

A new terahertz (THz) source in air based on the bifilamentation of femtosecond laser pulses
is reported. This THz radiation is 1 order of magnitude more intense than the transition …

An ultrafast terahertz (THz) source has been employed to study the nonlinear response of
semiconductors to near-half-cycle femtosecond pulses in the THz regime. We report …

By irradiating a water jet with double pulses, we demonstrate 4-fold higher THz wave
generation than for a single pump pulse. The dependence of the enhanced THz signal on …

This paper presents experimental results and an analysis of methods of generating terahertz
(THz) radiation, using femtosecond laser sources: generation by photoconductive …

This study experimentally demonstrates and theoretically analyzes the enhancement of
terahertz (THz) waves from two-color laser-field (consisting of a near-infrared femtosecond …

We demonstrate that the interaction between two intense femtosecond filaments
noncollinearly crossed in air results in third harmonic generation of more than two orders …