Absolute frequency referencing for swept dual-comb spectroscopy with midinfrared quantum cascade lasers
Kenichi N. Komagata, Valentin J. Wittwer, Thomas Südmeyer, Lukas Emmenegger, Michele Gianella
Abstract
A scheme to calibrate a frequency-swept frequency comb against a reference laser is developed. Its application to a dual-comb spectrometer based on midinfrared quantum cascade lasers results in molecular spectra with high-frequency accuracy at fast refresh rates.
Topics & Concepts
CascadeLaserFrequency combQuantum cascade laserOpticsSpectrometerSpectroscopyMaterials scienceQuantumPhysicsOptoelectronicsChemistryQuantum mechanicsChromatographyAdvanced Fiber Laser TechnologiesSpectroscopy and Laser ApplicationsMass Spectrometry Techniques and Applications