This study deals with the communication capabilities of two kinds of semiconductor lasers
emitting in one of the atmosphere transparency windows, around 4 m. One of these two …

Since about one and half centuries ago, at the dawn of modern communications, the radio
and the optics have been two separate electromagnetic spectrum regions to carry data …

Visible light communication (VLC) based on laser diodes demonstrates great potential for
high data rate maritime, terrestrial, and aerial wireless data links. Here, we design and …

A roadmap for future wireless communications is expected to exploit all transmission-
suitable spectrum bands, from the microwave to the optical frequencies, to support orders of …

An electrically switchable graphene terahertz (THz) modulator with a tunable‐by‐design
optical bandwidth is presented and it is exploited to compensate the cavity dispersion of a …

Terahertz (THz) quantum cascade lasers (QCLs) are electrically pumped and
heterostructure based semiconductor laser sources with intersubband transitions of …

Metasurfaces have emerged as fascinating planar optical components and devices, and, in
particular, active metasurfaces confer more multifunctional expansions. However, the …

Cavity-optomechanics-based phonon lasers are traditionally described in terms of three-
mode resonance, while the energy nonconservation optomechanical terms are …

Layered 2D materials display unique optical and electrical properties that can enable
manipulation, propagation, and detection of electromagnetic waves over a broad spectral …

Terahertz flat optics based on our originally developed low-reflection metasurface with a
high refractive index can offer attractive two-dimensional optical components for the …