Dual-comb spectroscopy of the ν1+ ν3 band of acetylene: Intensity and transition dipole moment

Iwakuni, Kana

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https://hdl.handle.net/2142/97160 Copy

Description

Title

Dual-comb spectroscopy of the ν1+ ν3 band of acetylene: Intensity and transition dipole moment

Author(s)

Iwakuni, Kana

Contributor(s)

• Sasada, Hiroyuki
• Hong, Feng-Lei
• Onae, Atsushi
• Inaba, Hajime
• Yamada, Koichi M.T.
• Okubo, Sho

Issue Date

2017-06-19

Keyword(s)

Instrument/technique demonstration

Abstract

The $nu_1$+$nu_3$ vibration band of $^{12}$C$_2$H$_2$ is recorded with a homemade dual-comb spectrometer footnote{S. Okubo $et$ $al$., Applied Physics Express underline{8}, 082402 (2015).}. The spectral resolution and the accuracy of frequency determination are high, and the bandwidth is broad enough to take spectrum of the whole band in one shot. The last remarkable competence enables us to record all the spectral lines under constant experimental conditions. The linewidth and line strength of the P(26) to R(29) transitions are determined by fitting the line profile to Lambert-Beer’s law with a Voigt function. In the course of analysis, we found the ortho-para dependence of the pressure-broadening coefficient footnote{K.Iwakuni $et$ $al.$, 71th ISMS, WK15}footnote{K. Iwakuni $et$ $al.$, Physical Review Letters underline{117}, 143902 (2016).}. This time, we have determined the transition dipole moment of the $nu_1$+$nu_3$ band. It is noted that the transition dipole moment determined from the ortho lines agrees with that from the para lines._x000d_ _x000d_

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/97160

DOI

https://doi.org/10.15278/isms.2017.MK01

Copyright and License Information

Copyright 2017 Kana Iwakuni

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