High harmonic generation (HHG) spectroscopy has emerged as an invaluable tool for
studying electronic dynamics and structure in crystals. The primary challenges are imposed …

Semiconductor superlattices are strongly nonlinear media offering several technological
challenges associated with the generation of high-frequency Gigahertz radiation and very …

Nonlinear terahertz conductivity spectra of charges confined in semiconductor
nanostructures were calculated using a semiclassical Monte Carlo method. The confinement …

Terahertz pulses with a peak power of∼ 2 MW were generated in a noncollinear phase-
matched GaAs crystal at room temperature. Efficient difference-frequency generation was …

The terahertz radiation from ultraintense laser-produced plasmas has aroused increasing
attention recently as a promising approach toward strong terahertz sources. Here, we …

We demonstrate an all-optical terahertz modulator based on single-layer graphene on
germanium (GOG), which can be driven by a 1.55 μm CW laser with a low-level photodoping …

We experimentally observed the fast relaxation and relatively slow recombination dynamics
of photogenerated electrons/holes in a heteroepitaxial graphene-on-Si material under …

We propose a new type of terahertz (THz) radiation source based on the electron beam-
wave interaction. A high-order harmonic-generation process was introduced to a traveling …

We present designs of semiconductor contact grating high energy terahertz pulse sources
pumped by femtosecond pulses in the 1 to 5 µm wavelength range. Nearly wavelength …

A highly efficient, practical approach to high-energy multi-cycle terahertz (THz) generation
based on spectrally cascaded optical parametric amplification (THz-COPA) is introduced …