Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb

Juho Karhu, Teemu Tomberg, Francisco Senna Vieira, Guillaume Genoud, Vesa Hänninen, Markku Vainio, Markus Metsälä, Tuomas Hieta, Steven Bell, Lauri Halonen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We report a photoacoustic spectroscopy setup with a high-power mid-infrared frequency comb as the light source. The setup is used in broadband spectroscopy of radiocarbon methane. Owing to the high sensitivity of a cantilever-enhanced photoacoustic cell and the high-power light source, we can reach a detection limit below 100 ppb in a broadband measurement with a sample volume of only a few milliliters. The first infrared spectrum of 14CH4 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane.
Original languageEnglish
JournalOptics Letters
Volume44
Issue number5
Pages (from-to)1142-1145
Number of pages4
ISSN0146-9592
DOIs
Publication statusPublished - 1 Mar 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • RADIOCARBON DIOXIDE
  • C-14
  • 116 Chemical sciences

Cite this

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title = "Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb",
abstract = "We report a photoacoustic spectroscopy setup with a high-power mid-infrared frequency comb as the light source. The setup is used in broadband spectroscopy of radiocarbon methane. Owing to the high sensitivity of a cantilever-enhanced photoacoustic cell and the high-power light source, we can reach a detection limit below 100 ppb in a broadband measurement with a sample volume of only a few milliliters. The first infrared spectrum of 14CH4 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane.",
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author = "Juho Karhu and Teemu Tomberg and {Senna Vieira}, Francisco and Guillaume Genoud and Vesa H{\"a}nninen and Markku Vainio and Markus Mets{\"a}l{\"a} and Tuomas Hieta and Steven Bell and Lauri Halonen",
year = "2019",
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doi = "10.1364/OL.44.001142",
language = "English",
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journal = "Optics Letters",
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Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb. / Karhu, Juho; Tomberg, Teemu; Senna Vieira, Francisco; Genoud, Guillaume; Hänninen, Vesa; Vainio, Markku; Metsälä, Markus; Hieta, Tuomas; Bell, Steven; Halonen, Lauri.

In: Optics Letters, Vol. 44, No. 5, 01.03.2019, p. 1142-1145.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb

AU - Karhu, Juho

AU - Tomberg, Teemu

AU - Senna Vieira, Francisco

AU - Genoud, Guillaume

AU - Hänninen, Vesa

AU - Vainio, Markku

AU - Metsälä, Markus

AU - Hieta, Tuomas

AU - Bell, Steven

AU - Halonen, Lauri

PY - 2019/3/1

Y1 - 2019/3/1

N2 - We report a photoacoustic spectroscopy setup with a high-power mid-infrared frequency comb as the light source. The setup is used in broadband spectroscopy of radiocarbon methane. Owing to the high sensitivity of a cantilever-enhanced photoacoustic cell and the high-power light source, we can reach a detection limit below 100 ppb in a broadband measurement with a sample volume of only a few milliliters. The first infrared spectrum of 14CH4 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane.

AB - We report a photoacoustic spectroscopy setup with a high-power mid-infrared frequency comb as the light source. The setup is used in broadband spectroscopy of radiocarbon methane. Owing to the high sensitivity of a cantilever-enhanced photoacoustic cell and the high-power light source, we can reach a detection limit below 100 ppb in a broadband measurement with a sample volume of only a few milliliters. The first infrared spectrum of 14CH4 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane.

KW - RADIOCARBON DIOXIDE

KW - C-14

KW - 116 Chemical sciences

U2 - 10.1364/OL.44.001142

DO - 10.1364/OL.44.001142

M3 - Article

VL - 44

SP - 1142

EP - 1145

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 5

ER -