Strong terahertz (THz) electric and magnetic transients open up new horizons in science
and applications. We review the most promising way of achieving sub-cycle THz pulses with …

Recent studies have demonstrated that femtosecond laser pulses have high potential in
application to environmental science. Because of the properties of ultrafast, broadband and …

Extreme nonlinear interactions of THz electromagnetic fields with matter are the next frontier
in nonlinear optics. However, reaching this frontier in free space is limited by the existing …

Terahertz (THz) radiation produced by the filamentation of two-color pulses over long
distances in argon is numerically investigated using a comprehensive model in full space …

Nonlinear THz photonics is probably the last frontier of nonlinear optics. The strength of both
the electric and the magnetic fields of these ultrashort low-frequency light bunches opens …

Terahertz pulses are very popular because of their numerous applications, for example in
security. Located between microwaves and optical waves in the electromagnetic spectrum …

We study terahertz (THz) emission by two-color femtosecond filaments in air using pump
wavelengths λ 0 from 0.8 to 10.6 μ m. Comprehensive three-dimensional numerical …

The temporal evolution of a plasma channel at the trail of a self-guided femtosecond laser
pulse was studied experimentally and theoretically in air, nitrogen (with an admixture of∼ …

We theoretically study the generation of terahertz (THz) radiation by two-color filamentation
of ultrashort laser pulses with different wavelengths. We consider wavelengths in the range …

Coherent time-domain spectroscopy (TDS) using terahertz radiation is valuable for
fundamental science, security, and medical applications. This study investigates the …