Graphene has long been predicted to show exceptional nonlinear optical properties,
especially in the technologically important terahertz (THz) frequency range. Recent …

Nonlinear optics is an increasingly important field for scientific and technological
applications, owing to its relevance and potential for optical and optoelectronic technologies …

In this paper, we review and discuss how nanoantennas may be used to largely enhance
the nonlinear response of optical materials. For single nanoantennas, there have been …

Intense Terahertz Excitation of Semiconductors presents the first comprehensive treatment
of high-power terahertz applications to semiconductors and low-dimensional semiconductor …

A sum rule for electronic intersubband transitions has been derived following Kane's model,
beyond the quadratic dispersion relations. The sum rule takes into account the effects of …

The direction of emission of photoexcited electrons in semiconductors is controlled by
adjusting the relative phase difference between a midinfrared radiation and its second …

Achieving efficient, high-power harmonic generation in the terahertz spectral domain has
technological applications, for example, in sixth generation (6G) communication networks …

The linear and nonlinear intersubband optical absorptions in Al xl Ga 1-xl As/GaAs/Al xr Ga
1-xr As asymmetric rectangular quantum well are studied within the framework of the density …

Coupled quantum wells present unique opportunities for engineering new semiconductors
with large optical nonlinearities associated with intersubband transitions in the infrared. In …

Optical transitions in a Lens-Shaped Quantum Dot (LSD) are investigated in the presence of
a hydrogenic impurity. The electronic wave functions are obtained analytically and the …