Cavity ring-down spectroscopy (CRDS), first pioneered in 1988 by O'Keefe and Deacon, 1
has evolved into a newgeneration, precision spectroscopy in recent years and subsequently …

By reducing both the internal and translational temperature of any species down to a few
kelvins, the buffer-gas-cooling (BGC) technique has the potential to dramatically improve the …

The Doppler broadened R (0) and R (1) lines of the (2–0) vibrational band of HD have been
measured at liquid nitrogen temperature and at pressures of 2 Pa, with a comb referenced …

We present an accurate measurement of the weak quadrupole S (2) 2-0 line in self-
perturbed D 2 and theoretical ab initio calculations of both collisional line-shape effects and …

Comb Coherence Transfer (CCT) uses a feed-forward frequency correction to transfer the
optical phase of a frequency comb to the beam of a free-running diode laser. This allows the …

There is an increasing demand for precise molecular spectroscopy, in particular in the mid-
infrared (MIR) fingerprint window that hosts a considerable number of vibrational signatures …

Accurate and spectroscopic measurements of molecular transition frequencies are
increasingly being employed in a variety of rigorous tests of physics, including the validity of …

Magnetic dipole transitions of oxygen molecules, which span the microwave-to-infrared
region, play a crucial role in remote sensing applications. However, accurately determining …

We present measurements of molecular transition frequencies based on the comb-locked
cavity ring-down spectroscopy technique, reporting vacuum transition frequencies of …

Doppler-free saturated-absorption Lamb dips were measured at sub-Pa pressures on
rovibrational lines of H 2 16 O near 7180 cm− 1, using optical feedback frequency stabilized …