This paper reviews recent advances in terahertz-wave generation in graphene toward the
creation of new types of terahertz lasers. First, fundamental basis of the optoelectronic …

We demonstrated that an incident terahertz peak field amplitude below 0.01 MV/cm can
trigger Zener tunneling in a semi-insulating GaAs. Moreover, a transmission decrease with …

Graphene has been proposed as a particularly attractive material for the achievement of
strong optical nonlinearities, in particular generation of terahertz radiation. However, owing …

We summarize our progress made on developing widely tunable monochromatic terahertz
sources. They have been implemented based on difference-frequency generation (DFG) in …

We have investigated terahertz (THz) sideband generation from bulk GaAs using intense
pulses of coherent THz (or far-infrared) radiation from a free electron laser. In contrast to …

We report on the second harmonic generation (SHG) of a near-infrared pulse in a zinc
telluride crystal through the Pockels effect induced by an intense terahertz pulse. The …

In this Letter, we investigate the nonlinear effects of extremely intense few-cycle terahertz
(THz) pulses (generated from the organic crystal 4-NN, NN-dimethylamino-4^′ 4^′-N …

The field of terahertz science and technology has been an active and thriving research area
for several decades. However, the field has recently experienced an inflection point, as …

We theoretically investigate the effects of the excitation frequency on the plateau of high-
order terahertz sideband generation (HSG) in semiconductors driven by intense terahertz …

We theoretically study the terahertz-induced high-order harmonic generation (HHG) and
nonlinear electric transport in graphene based on the quantum master equation with the …