Work

Simultaneous mid-infrared quantum cascade laser dual comb Faraday rotation and absorption spectroscopy

Year: 2025

Type: article

Abstract: Faraday rotation spectroscopy and absorption spectroscopy are performed simultaneously in a dual comb spectroscopy arrangement with quantum cascade laser combs operating at ∼8 μm. The system uses free-running laser combs that provide ∼70 cm−1 spectral coverage and ∼2 MHz spectral resolution. Detection of NO2 in an equilibrium mixture with N2O4 and N2O is used to demonstrate selective measurements of paramagnetic NO2 in the presence of spectrally interfering diamagnetic species.

Source: Journal of Physics B Atomic Molecular and Optical Physics

DOI: 10.1088/1361-6455/adbf59

Authors: Link Patrick, Gerard Wysocki

Institution: Princeton University

Language: English

Topic: Spectroscopy and Laser Applications

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funder: National Science Foundation