Optical frequency combs in quadratically nonlinear resonators

I Ricciardi, S Mosca, M Parisi, F Leo, T Hansson… - Micromachines, 2020 - mdpi.com
Optical frequency combs are one of the most remarkable inventions in recent decades.
Originally conceived as the spectral counterpart of the train of short pulses emitted by mode …

ExoMol molecular line lists–XXXVII. Spectra of acetylene

KL Chubb, J Tennyson… - Monthly Notices of the …, 2020 - academic.oup.com
ABSTRACT A new ro-vibrational line list for the ground electronic state of the main
isotopologue of acetylene, 12C2H2, is computed as part of the ExoMol project. The aCeTY …

Absolute frequency metrology of buffer-gas-cooled molecular spectra at 1 kHz accuracy level

R Aiello, V Di Sarno, MG Delli Santi, M De Rosa… - Nature …, 2022 - nature.com
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 …

[HTML][HTML] A short guide to recent developments in laser-based gas phase spectroscopy, applications, and tools

V Shumakova, OH Heckl - APL Photonics, 2024 - pubs.aip.org
This article provides an overview of laser-based absorption spectroscopy applications and
discusses the parameter space and requirements of laser systems for each of these …

On the 12 C 2 H 2 near-infrared spectrum: absolute transition frequencies and an improved spectroscopic network at the kHz accuracy level

A Castrillo, E Fasci, T Furtenbacher… - Physical Chemistry …, 2023 - pubs.rsc.org
Lamb dips of twenty lines in the P, Q, and R branches of the ν1+ ν3+ ν41 vibrational band of
12C2H2, in the spectral window of 7125–7230 cm− 1, have been measured using an …

Comb coherence-transfer and cavity ring-down saturation spectroscopy around 1.65 μm: kHz-accurate frequencies of transitions in the 2ν 3 band of 12 CH 4

O Votava, S Kassi, A Campargue… - Physical Chemistry …, 2022 - pubs.rsc.org
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 …

SI-traceable molecular transition frequency measurements at the 10−12 relative uncertainty level

ZD Reed, DA Long, H Fleurbaey, JT Hodges - Optica, 2020 - opg.optica.org
Accurate and spectroscopic measurements of molecular transition frequencies are
increasingly being employed in a variety of rigorous tests of physics, including the validity of …

Toward new frontiers for terahertz quantum cascade laser frequency combs

MS Vitiello, L Consolino, M Inguscio, P De Natale - Nanophotonics, 2020 - degruyter.com
Broadband, quantum-engineered, quantum cascade lasers (QCLs) are the most powerful
chip-scale sources of optical frequency combs (FCs) across the mid-infrared and the …

Lamb-dip cavity ring-down spectroscopy of acetylene at 1.4 μm

E Fasci, S Gravina, G Porzio, A Castrillo… - New Journal of …, 2021 - iopscience.iop.org
Doppler-free saturated-absorption Lamb dips are observed for weak vibration-rotation
transitions of C 2 H 2 between 7167 and 7217 cm− 1, using a frequency-comb assisted …

Hyperfine-Resolved Near-Infrared Spectra of H217O

M Melosso, ML Diouf, L Bizzocchi… - The Journal of …, 2021 - ACS Publications
Huge efforts have recently been taken in the derivation of accurate compilations of
rovibrational energies of water, one of the most important reference systems in …