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Absolute Frequency Referencing in the Long-Wave Infrared using a Quantum Cascade Laser Frequency Comb

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Abstract

We demonstrate that mid-infrared quantum cascade laser frequency combs are highly suitable as high-accuracy frequency references. We fully stabilize the comb and exploit it for comb-calibrated spectroscopy, achieving 100-kHz frequency accuracy at 7.7 μm.

© 2022 The Author(s)

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