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

Link Patrick; Gerard Wysocki

doi:10.1088/1361-6455/adbf59

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

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Article number	075401
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	58
Issue number	7
DOIs	https://doi.org/10.1088/1361-6455/adbf59
State	Published - Apr 14 2025

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Condensed Matter Physics

Keywords

DCS
Faraday
cascade
combs
laser
magneto-optical
mid-infrared

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10.1088/1361-6455/adbf59

Cite this

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title = "Simultaneous mid-infrared quantum cascade laser dual comb Faraday rotation and absorption spectroscopy",

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.",

keywords = "DCS, Faraday, cascade, combs, laser, magneto-optical, mid-infrared",

author = "Link Patrick and Gerard Wysocki",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Published by IOP Publishing Ltd.",

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doi = "10.1088/1361-6455/adbf59",

language = "English (US)",

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T1 - Simultaneous mid-infrared quantum cascade laser dual comb Faraday rotation and absorption spectroscopy

AU - Patrick, Link

AU - Wysocki, Gerard

PY - 2025/4/14

Y1 - 2025/4/14

N2 - 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.

AB - 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.

KW - DCS

KW - Faraday

KW - cascade

KW - combs

KW - laser

KW - magneto-optical

KW - mid-infrared

UR - https://www.scopus.com/pages/publications/105000726632

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M3 - Article

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SN - 0953-4075

VL - 58

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 7

M1 - 075401

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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