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Accurate transition frequency list of the ν3 band of methane from sub-Doppler resolution comb-referenced spectroscopy

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Abstract

We have carried out sub-Doppler resolution spectroscopy of the ν3 band of CH412 using a difference-frequency-generation source, an enhanced cavity absorption cell, and an optical frequency comb, and we have added 150 lines to the transition frequency list published earlier [Opt. Express 19, 23878 (2011)]. It now covers 204 lines from the P(12) to R(8) transitions, involving 21 weak forbidden transitions, with a typical uncertainty of 3 kHz for allowed transitions and 12 kHz for forbidden transitions. The combination differences between the allowed and forbidden transitions enable us to determine a scalar rotational constant and three scalar distortion constants of the ground vibrational state with greatly reduced uncertainties.

© 2013 Optical Society of America

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Corrections

Masashi Abe, Kana Iwakuni, Sho Okubo, and Hiroyuki Sasada, "Accurate transition frequency list of the ν3 band of methane from sub-Doppler resolution comb-referenced spectroscopy: erratum," J. Opt. Soc. Am. B 36, 896-896 (2019)
https://opg.optica.org/josab/abstract.cfm?uri=josab-36-4-896

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