Over the past decade, the demonstration of frequency combs has been reported in a wide
range of quantum cascade lasers. These combs have huge potential in applications …

The dynamics of semiconductor lasers with fast gain is generally considered to suppress
amplitude modulation, resulting in a frequency‐modulated output. Since their first …

High-quality optical ring resonators can confine light in a small volume and store it for
millions of roundtrips. They have enabled the dramatic size reduction from laboratory scale …

Recently, there has been a growing interest in integrated THz photonics for various
applications in communications, spectroscopy and sensing. We present a new integrated …

On-chip integration of optical comb sources is crucial in enabling their widespread use.
Integrated photonic devices that can be mass-manufactured in semiconductor processing …

Quantum cascade lasers (QCLs) constitute an intriguing opportunity for the generation of on-
chip optical dissipative Kerr solitons (DKSs). Originally demonstrated in passive …

Chip‐scale, electrically‐pumped terahertz (THz) frequency‐combs (FCs) rely on nonlinear
four‐wave‐mixing processes, and have a nontrivial phase relationship between the evenly …

Ring resonators are an interesting alternative cavity solution to the commonly used ridge-
type waveguide for terahertz (THz) quantum cascade lasers. They either support a standing …

We present a study concerning the dynamics of dense and harmonic coherent regimes in
quantum cascade lasers (QCLs) in a Fabry–Perot configuration emitting in the terahertz …

Frequency‐modulated (FM) combs feature flat intensity spectra with a linear frequency chirp,
useful for metrology and sensing applications. Generating FM combs in semiconductor …