We report on a heterogeneous active region design for terahertz quantum cascade laser
based frequency combs. Dynamic range, spectral bandwidth and output power have been …

We report on the engineering of broadband quantum cascade lasers (QCLs) emitting at
Terahertz (THz) frequencies, which exploit a heterogeneous active region scheme and have …

Terahertz quantum cascade laser sources based on intra-cavity difference frequency
generation from mid-IR devices are an important asset for applications in rotational …

We report a homogeneous quantum cascade laser (QCL) emitting at terahertz (THz)
frequencies, with a total spectral emission of about 0.6 THz, centered around 3.3 THz, a …

Ultra-short pulses are an attractive way of expanding today's terahertz time-domain systems
toward frequencies above 2 THz, and moreover mode control enables reliable generation of …

Broadband, quantum-engineered, quantum cascade lasers (QCLs) are the most powerful
chip-scale sources of optical frequency combs (FCs) across the mid-infrared and the …

We present an experimental investigation of the multimode dynamics and the coherence of
terahertz quantum cascade lasers emitting over a spectral bandwidth of~ 1THz. The devices …

In recent years, quantum cascade lasers (QCLs) have shown tremendous potential for the
generation of frequency combs in the mid-infrared and terahertz portions of the …

In recent years, quantum cascade lasers have emerged as mature semiconductor sources of
light in the terahertz range, the frequency range spanning 1 to 10 THz. Though technological …

Terahertz sources based on intracavity difference-frequency generation in mid-infrared
quantum cascade lasers (THz DFG-QCLs) have recently emerged as the first monolithic …