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 …

Quantum cascade lasers (QCLs) represent the most fascinating achievement of quantum
engineering, showing how artificial materials can be generated through quantum design …

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

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

Harmonic comb states have proven to be ubiquitous in mid-IR quantum cascade lasers. We
report here on robust, pure, self-starting harmonic mode locking in Copper-based double …

Even though already in the seventies, right after the invention of the quantum cascade laser
(QCL) concept, it was argued that this device could be operated in the THz (far-infrared) …

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 …

Broadband metrological‐grade frequency comb (FC) synthesizers with a rich number of
phase locked modes are the ideal sources for quantum sensing and quantum metrology. At …

Quantum cascade lasers (QCL) have revolutionized the generation of mid-infrared light. Yet,
the ultrafast carrier transport in mid-infrared QCLs has so far constituted a seemingly …

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