Optical frequency combs offer an unrivalled degree of frequency measurement precision
that underpins the advance of modern technology in both fundamental science and …

To meet the challenges of high-resolution molecular spectroscopy, increasingly
sophisticated spectroscopic techniques were developed. For a long time FTIR and laser …

Detection and analysis of volatile compounds in exhaled breath represents an attractive tool
for monitoring the metabolic status of a patient and disease diagnosis, since it is non …

Dissipative Kerr solitons are self-organized optical waves arising from the interplay between
the Kerr effect and dispersion. They can form in nonlinear microresonators by deliberately …

It was recently demonstrated that broadband quantum cascade lasers can operate as
frequency combs. As such, they operate under direct electrical pumping at both mid-infrared …

The kinetic analysis of irreversible protein reactions requires an analytical technique that
provides access to time-dependent infrared spectra in a single shot. Here, we present a …

Quantum cascade laser (QCL) frequency combs are a promising candidate for chemical
sensing and biomedical diagnostics,,–. They are electrically pumped and compact, making …

Photoacoustic dual-comb spectroscopy (DCS), converting spectral information in the optical
frequency domain to the audio frequency domain via multi-heterodyne beating, enables …

The quantum cascade laser has evolved to be a compact, powerful source of coherent mid-
infrared light; however, its fast gain dynamics strongly restricts the formation of ultrashort …

Since the first demonstration of the quantum cascade laser (QCL) frequency comb in 2012,
there have been open questions concerning the reproducibility of comb states, and, critically …