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Cavity-Enhanced Dual-Comb Spectroscopy in the Fingerprint Region with Quantum Cascade Lasers

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Abstract

A quantum cascade frequency comb operating near 9.5 µm (1050 cm-1) is coupled to a high finesse optical cavity. We demonstrate cavity-enhanced spectroscopy of methanol vapor via dual-comb detection of the cavity transmission.

© 2023 The Author(s)

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