Longwave infrared (6.6–11.4 µm) dual-comb spectroscopy with 240,000 comb-mode-resolved data points at video rate

S Vasilyev, A Muraviev, D Konnov, M Mirov… - Optics Letters, 2023 - opg.optica.org
Using sub-3-cycle pulses from mode-locked Cr: ZnS lasers at λ≈ 2.4 µm as a driving
source, we performed high-resolution dual-frequency-comb spectroscopy in the longwave …

[HTML][HTML] Empirical rovibrational energy levels for nitrous oxide

J Tennyson, T Furtenbacher, SN Yurchenko… - Journal of Quantitative …, 2024 - Elsevier
A survey of the huge number of measured rovibrational transitions of the 14 N 2 16 O
isotopologue of nitrous oxide is performed which either confirms the positions, the …

[HTML][HTML] High-resolution frequency-comb spectroscopy with electro-optic sampling and instantaneous octave-wide coverage across mid-IR to THz at a video rate

D Konnov, A Muraviev, S Vasilyev, K Vodopyanov - APL Photonics, 2023 - pubs.aip.org
Ultrabroadband electro-optic sampling using few-optical-cycle probing pulses is a sensitive
technique to detect electric field amplitudes with a high dynamic range and up to near …

High-resolution spectroscopic measurements of cold samples in supersonic beams using a QCL dual-comb spectrometer

JA Agner, S Albert, P Allmendinger… - Molecular …, 2022 - Taylor & Francis
Optical frequency-comb spectroscopy has proven a very useful tool for high-resolution
molecular spectroscopy. Frequency combs based on quantum-cascade lasers (QCL) offer …

Absolute frequency referencing for swept dual-comb spectroscopy with midinfrared quantum cascade lasers

KN Komagata, VJ Wittwer, T Südmeyer… - Physical Review …, 2023 - APS
Quantum cascade laser (QCL) frequency combs have revolutionized midinfrared (MIR)
spectroscopy by their high brightness and fast temporal resolution, and are a promising …

[HTML][HTML] A methane line list with sub-MHz accuracy in the 1250 to 1380 cm− 1 range from optical frequency comb Fourier transform spectroscopy

M Germann, A Hjältén, V Boudon, C Richard… - Journal of Quantitative …, 2022 - Elsevier
We use a Fourier transform spectrometer based on a difference frequency generation optical
frequency comb to measure high-resolution, low-pressure, room-temperature spectra of …

[HTML][HTML] Mid-infrared dual-comb spectroscopy with quantum cascade lasers

J Hayden, M Geiser, M Gianella, R Horvath, A Hugi… - APL Photonics, 2024 - pubs.aip.org
Since its invention in 1994, the quantum cascade laser (QCL) has emerged as a versatile
light source of wavelength 4–12 µm, covering most of the mid-and long-wavelength infrared …

Dual-comb spectroscopy of ammonia formation in non-thermal plasmas

I Sadiek, AJ Fleisher, J Hayden, X Huang… - Communications …, 2024 - nature.com
Plasma-activated chemical transformations promise the efficient synthesis of salient
chemical products. However, the reaction pathways that lead to desirable products are often …

[HTML][HTML] Coherent control of mid-infrared frequency comb by optical injection of near-infrared light

KN Komagata, A Parriaux, M Bertrand, J Hillbrand… - APL Photonics, 2023 - pubs.aip.org
We demonstrate the use of a low power near-infrared laser illuminating the front facet of a
quantum cascade laser (QCL) as an optical actuator for the coherent control of a mid …

Long wavelength mid-infrared multi-gases spectroscopy using tunable single-mode slot waveguide quantum cascade laser

Y Jin, F Sun, J Li, CS Tan, KH Tan, S Wicaksono… - Optics …, 2023 - opg.optica.org
Single-mode tunable quantum cascade lasers (QCLs) are promising for high-resolution and
highly sensitive trace gases sensing across the mid-infrared (MIR) region. We report on the …