Metamaterials are composed of periodic subwavelength metal/dielectric structures that
resonantly couple to the electric and/or magnetic components of the incident …

Frequency conversion processes, such as second-and third-harmonic generation, are
commonly realized in nonlinear optics, offering opportunities for applications in photonics …

Intersubband transitions in n-doped multi-quantum-well semiconductor heterostructures
make it possible to engineer one of the largest known nonlinear optical responses in …

Quantum cascade (QC') lasers are reviewed. These are semiconductor injection lasers
based on intersubband transitions in a multiple-quantum-well (QW) heterostructure …

Low‐dimensional metal‐halide perovskites have exhibited significantly superior nonlinear
optical properties compared to traditional semiconductor counterparts, thanks to their …

Nonlinear polaritonic metasurfaces created by the coupling of intersubband nonlinearities in
semiconductor heterostructures with optical modes in nanoresonators have recently …

We apply the Pancharatnam-Berry phase approach to plasmonic metasurfaces loaded by
highly nonlinear multiquantum-well substrates, establishing a platform to control the …

The terahertz spectral range (λ= 30–300 µm) has long been devoid of compact, electrically
pumped, room-temperature semiconductor sources,,,. Despite recent progress with terahertz …

Following an introduction to the history of the invention of the quantum cascade (QC) laser
and of the band-structure engineering advances that have led to laser action over most of …

Garito and co-workers have suggested a mechanism to dramatically increase the second
hyperpolarizability, γ, in linear π-electron–conjugated molecules. Polarization is introduced …