The past decade saw the emergence of new temperature sensors that have the potential to
disrupt a century-old measurement infrastructure based on resistance thermometry. In this …

Quantum cascade laser (QCL) frequency combs have revolutionized midinfrared (MIR)
spectroscopy by their high brightness and fast temporal resolution, and are a promising …

Tunable lasers, with the ability to continuously vary their emission wavelengths, have found
widespread applications across various fields such as biomedical imaging, coherent …

Laser-based primary thermometry was initiated almost 15 years ago by the proposal to
determine the absolute temperature of a gas at thermodynamic equilibrium through the …

Advances in laser spectroscopy have enabled many scientific breakthroughs in physics,
chemistry, biology, and astronomy. Optical frequency combs pushed measurement limits …

Optical frequency combs (OFCs) based on quantum cascade lasers (QCLs) have
transformed mid-infrared spectroscopy. However, QCL-OFCs have not yet been exploited to …

Photonic sensors offer the possibility of purely optical measurement in contact thermometry.
In this work, silicon-based ring resonators were used for this purpose. These can be …

We report on the generation of a highly coherent broadband optical linear frequency sweep
(LFS) using mode-spacing swept comb and multi-loop composite optical phase-locked loop …

We demonstrate broadband and sensitive cavity ring-down spectroscopy using a near
infrared frequency comb and a time-resolved Fourier transform spectrometer. The cavity …

The high frequency region beyond 100 GHz considered for 6G poses challenges for future
communication and measurement equipment. In this work we present a novel tunable THz …