High-resolution spectroscopy not only can identify atoms and molecules but also can
provide detailed information on their chemical and physical environment and relative …

The terahertz region is of great importance for spectroscopy since many molecules have
absorption fingerprints there. Frequency combs based on terahertz quantum cascade lasers …

We report the heterodyne detection and phase locking of a 2.5? THz quantum cascade laser
(QCL) using a terahertz frequency comb generated in a GaAs photomixer using a …

Terahertz light can be used to identify numerous complex molecules, but has traditionally
remained unexploited due to the lack of powerful broadband sources. Pulsed lasers can be …

We demonstrate coherent phase locking of a room-temperature continuous-wave quantum
cascade laser (QCL) at 9.1 μm to a Tm-fiber laser frequency comb centered at 2 μm, with an …

Frequency combs based on quantum cascade lasers (QCLs) are finding promising
applications in high-speed broadband spectroscopy in the terahertz regime, where many …

We report a metrological-grade THz spectroscopy based on the combination of a THz
frequency-comb synthesizer (FCS) and a THz quantum cascade laser (QCL). The QCL …

Quantum cascade lasers combine desirable features, namely high optical power and
compactness, as no other coherent source in the field of THz generation. While their …

Quantum cascade lasers (QCLs) are versatile light sources with tailorable emitting
wavelengths covering the mid-infrared and terahertz spectral ranges. When the dispersion is …

Terahertz laser frequency combs based on quantum cascade lasers provide coherent,
broadband, electrically pumped, THz radiation sources for use in future spectroscopic …