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Relative Intensity Noise Characterization of a Quantum Cascade Laser Frequency-Comb Symmetric Dual-Comb Spectrometer

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Abstract

We measure the relative intensity noise (RIN) of a symmetric Dual-Comb Spectrometer enabled by quantum cascade laser frequency-combs. The RIN of the maximum peak in the multiheterodyne spectra is mitigated from 5.2103Hz12 to 2.2103Hz12 by performing digitally balanced detection between signal and reference channels.

© 2021 The Author(s)

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