Free-Electron Lasers are a rapidly growing field for advanced science and applications, and
worldwide facilities for intense field generation, characterization and usage are becoming …

An experiment-theory comparison is presented to demonstrate terahertz-induced extreme-
nonlinear transients in a GaAs/AlGaAs quantum-well system. The terahertz-pump and …

Optical responses of graphene in the presence of intense circularly and linearly polarized
terahertz fields are investigated based on the Floquet theory. We examine the energy …

Semiconductor quantum well electroabsorption modulators are widely used to modulate
near-infrared (NIR) radiation at frequencies below 0.1 terahertz (THz). Here, the NIR …

Intense terahertz (THz) electric field transients with amplitudes up to several
megavolts/centimeter and novel multidimensional techniques are the key ingredients of …

Weak near-infrared and strong terahertz excitation are applied to study excitonic Rabi
splitting in (GaIn) As/GaAs quantum wells. Pronounced anticrossing behavior of the split …

A 4-m-thick sample containing 50 GaAs/AlGaAs asymmetric coupled quantum wells was
driven with a strong terahertz THz electric field of frequency THz and probed with a near …

We formulate a time-dependent density-functional theory (TDDFT) in terms of the density
matrix to study ultrafast phenomena in semiconductor structures. A system of equations for …

Intense narrowband terahertz pulses are used to modify excitonic transitions in
semiconductor quantum wells and to study the dephasing properties of the optically dark 2 p …

A microscopic theory for the terahertz response of excited semiconductor systems is
presented. It is verified that the theory yields the correct effective‐mass Drude limit. For a …