Dual wavelength 3.2-μm source for isotope ratio measurements of 13CH4/12CH4

Masashi Abe; Satomi Kusanagi; Yoshiki Nishida; Osamu Tadanaga; Hirokazu Takenouchi; Hiroyuki Sasada

doi:10.1364/OE.23.021786

Dual wavelength 3.2-μm source for isotope ratio measurements of ¹³CH₄/¹²CH₄

Masashi Abe, Satomi Kusanagi, Yoshiki Nishida, Osamu Tadanaga, Hirokazu Takenouchi, Hiroyuki Sasada

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Difference frequency generation using one 1.58-μm and two 1.06-μm distributed feedback Bragg-grating laser diodes and a ridgetype PPLN alternately provide two 3.2-μm coaxial waves resonant with individual isotopic transitions separated by 13 cm^-1. The ν₃ band R(6) A₂ allowed transition of ¹³CH₄ and the ν₃ band R(6) A₂ weakly allowed transition of ¹²CH₄ are an ideal pair for isotope ratio measurements. The ¹³CH₄/¹²CH₄ isotope ratio is determined for three sample gases with a relative uncertainty of 0.7 ‰, and it is confirmed that the temperature dependence is smaller than the uncertainty.

Original language	English
Pages (from-to)	21786-21797
Number of pages	12
Journal	Optics Express
Volume	23
Issue number	17
DOIs	https://doi.org/10.1364/OE.23.021786
Publication status	Published - 2015 Aug 24

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Dual wavelength 3.2-μm source for isotope ratio measurements of 13CH4/12CH4",

abstract = "Difference frequency generation using one 1.58-μm and two 1.06-μm distributed feedback Bragg-grating laser diodes and a ridgetype PPLN alternately provide two 3.2-μm coaxial waves resonant with individual isotopic transitions separated by 13 cm-1. The ν3 band R(6) A2 allowed transition of 13CH4 and the ν3 band R(6) A2 weakly allowed transition of 12CH4 are an ideal pair for isotope ratio measurements. The 13CH4/12CH4 isotope ratio is determined for three sample gases with a relative uncertainty of 0.7 ‰, and it is confirmed that the temperature dependence is smaller than the uncertainty.",

author = "Masashi Abe and Satomi Kusanagi and Yoshiki Nishida and Osamu Tadanaga and Hirokazu Takenouchi and Hiroyuki Sasada",

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T1 - Dual wavelength 3.2-μm source for isotope ratio measurements of 13CH4/12CH4

AU - Abe, Masashi

AU - Kusanagi, Satomi

AU - Nishida, Yoshiki

AU - Tadanaga, Osamu

AU - Takenouchi, Hirokazu

AU - Sasada, Hiroyuki

PY - 2015/8/24

Y1 - 2015/8/24

N2 - Difference frequency generation using one 1.58-μm and two 1.06-μm distributed feedback Bragg-grating laser diodes and a ridgetype PPLN alternately provide two 3.2-μm coaxial waves resonant with individual isotopic transitions separated by 13 cm-1. The ν3 band R(6) A2 allowed transition of 13CH4 and the ν3 band R(6) A2 weakly allowed transition of 12CH4 are an ideal pair for isotope ratio measurements. The 13CH4/12CH4 isotope ratio is determined for three sample gases with a relative uncertainty of 0.7 ‰, and it is confirmed that the temperature dependence is smaller than the uncertainty.

AB - Difference frequency generation using one 1.58-μm and two 1.06-μm distributed feedback Bragg-grating laser diodes and a ridgetype PPLN alternately provide two 3.2-μm coaxial waves resonant with individual isotopic transitions separated by 13 cm-1. The ν3 band R(6) A2 allowed transition of 13CH4 and the ν3 band R(6) A2 weakly allowed transition of 12CH4 are an ideal pair for isotope ratio measurements. The 13CH4/12CH4 isotope ratio is determined for three sample gases with a relative uncertainty of 0.7 ‰, and it is confirmed that the temperature dependence is smaller than the uncertainty.

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Dual wavelength 3.2-μm source for isotope ratio measurements of ¹³CH₄/¹²CH₄

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