Mid-infrared absorption spectroscopy with enhanced detection performance for biomedical applications

D An, F Sun, Y Bian, J Ni, QJ Wang… - Applied Spectroscopy …, 2023 - Taylor & Francis
Mid-infrared absorption spectroscopy is a powerful tool to measure and analyze
composition, concentration and structure of substance molecules. Due to the advantages of …

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 …

Hybrid integrated dual-microcomb source

NY Dmitriev, SN Koptyaev, AS Voloshin… - Physical Review …, 2022 - APS
Dual-comb interferometry is based on self-heterodyning two optical frequency combs, with
corresponding mapping of the optical spectrum into the radio-frequency domain. The dual …

Heterodyne coherent detection of the electric field temporal trace emitted by frequency-modulated comb lasers

B Chomet, S Basceken, D Gacemi, B Schneider… - Optica, 2024 - opg.optica.org
Frequency-modulated (FM) combs are produced by mode-locked lasers<? TeX 2pc 0pt?> in
which the electric field has a linearly chirped frequency and nearly constant amplitude. This …

[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 …

Absolute frequency referencing in the long wave infrared using a quantum cascade laser frequency comb

KN Komagata, M Gianella, P Jouy, F Kapsalidis… - Optics …, 2022 - opg.optica.org
Optical frequency combs (OFCs) based on quantum cascade lasers (QCLs) have
transformed mid-infrared spectroscopy. However, QCL-OFCs have not yet been exploited to …

Electro-optic sampling of a free-running terahertz quantum-cascade-laser frequency comb

S Markmann, D Stark, M Singleton, M Beck, J Faist… - Physical Review …, 2023 - APS
Quantum-cascade-laser (QCL) frequency combs are compact semiconductor light sources
operating in the mid-IR and terahertz frequencies. Achieving subpicosecond laser pulses …

Synchronization of frequency combs by optical injection

J Hillbrand, M Bertrand, V Wittwer, N Opačak… - Optics …, 2022 - opg.optica.org
Optical frequency combs based on semiconductor lasers are a promising technology for
monolithic integration of dual-comb spectrometers. However, the stabilization of offset …

Coherence analysis of tightly locked mid-infrared quantum cascade laser frequency combs

A Parriaux, KN Komagata, M Bertrand… - arXiv preprint arXiv …, 2023 - arxiv.org
Frequency combs are powerful tools for many applications and high performances are
achieved by stabilizing these lasers. For operation in the mid-infrared, quantum cascade …

Frequency axis for swept dual-comb spectroscopy with quantum cascade lasers

M Gianella, S Vogel, VJ Wittwer, T Südmeyer, J Faist… - Optics Letters, 2022 - opg.optica.org
In dual-comb spectroscopy, there is a one-to-one map between the frequencies of the
measured beat notes and the frequencies of the optical comb lines. Its determination usually …