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 …

We present a directly generated on-chip dual-comb source at terahertz (THz) frequencies.
The multi-heterodyne beating signal of two free-running THz quantum cascade laser …

Terahertz (THz) dual comb spectroscopy (DCS) is a promising method for high-accuracy,
high-resolution, broadband THz spectroscopy because the mode-resolved THz comb …

The ability to engineer quantum-cascade-lasers (QCLs) with ultrabroad gain spectra, and
with a full compensation of the group velocity dispersion, at terahertz (THz) frequencies, is …

Portable terahertz (THz) frequency comb sources are highly desired for applications in
rotational molecular spectroscopy and sensing. To date, direct THz quantum cascade laser …

An efficient mid-infrared frequency comb source is of great interest to high speed, high
resolution spectroscopy and metrology. Here we demonstrate a mid-IR quantum cascade …

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 (QCL) sources based on intra-cavity difference frequency
generation are currently the only electrically pumped monolithic semiconductor light sources …

A breakthrough technology, on-chip frequency comb sources offer broadband combs while
being compact, energy-efficient, and cost-effective solutions for various applications from …

Optical frequency combs (OFCs), which establish a rigid phase-coherent link between the
microwave and optical domains of the electromagnetic spectrum, are emerging as key high …