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DOI: 10.1021/acsphotonics.3c01625

Near-infrared dual-comb spectroscopy of CO2 and N2O with a discretized highly nonlinear fiber

Alix MalfondetMoise DerohSidi-Ely Ahmedou ...+8 Guy Millot
Jan 2024
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摘要原文
In this paper, we introduce an all-fibered dual-comb spectrometer based on a new design of highly nonlinear fiber to efficiently convert frequency combs from 1.55 micron to 2 micron We show that our spectrometer can be used to measure absorption profiles of rovibrational transitions of CO2 and N2O molecules, and especially their collisional self-broadening coefficients. The results show very good agreement with the HITRAN database and thus further measurements have been performed on a mixture CO2 /N2O to measure the broadening of the CO2 absorption lines resulting from the presence of N2O.
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