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arXiv · 2205.04088

Self-broadening and self-shift in the $\mathbf{3\nu_{2}}$ band of ammonia from mid-infrared-frequency-comb spectroscopy

Guang Yang·Vinicius Silva de Oliveira·Dominic Laumer·Christoph M. Heyl·Andrey Yachmenev·Ingmar Hartl·Jochen Küpper
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Abstract

We report the broadband absorption spectrum of the $3\nu_{2}$ band of $^{14}$NH$_{3}$ near 4 $\mu m$. The data were recorded using a mid-infrared frequency comb coupled to a homebuilt Fourier-transform spectrometer with a resolution of 0.00501 $cm^{-1}$. Line positions, line intensities, self-broadening, and self-shift parameters for six rovibrational lines were determined at room temperature ($T=296$ K). Comparison with HITRAN 2016 shows good agreement at improved precision. The high precision and the rapid tunability of our experiment enables advanced fast spectroscopy of molecular gases.

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Guang Yang, Vinicius Silva de Oliveira, Dominic Laumer, Christoph M. Heyl, Andrey Yachmenev, Ingmar Hartl, Jochen Küpper. 2022-05-09. Self-broadening and self-shift in the $\mathbf{3\nu_{2}}$ band of ammonia from mid-infrared-frequency-comb spectroscopy. https://doi.org/10.1016/j.jms.2023.111744

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