Karhu , J , Tomberg , T , Senna Vieira , F , Genoud , G , Hänninen , V , Vainio , M , Metsälä , M , Hieta , T , Bell , S & Halonen , L 2019 , ' Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb ' , Optics Letters , vol. 44 , no. 5 , pp. 1142-1145 . https://doi.org/10.1364/OL.44.001142
Title: | Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb |
Author: | Karhu, Juho; Tomberg, Teemu; Senna Vieira, Francisco; Genoud, Guillaume; Hänninen, Vesa; Vainio, Markku; Metsälä, Markus; Hieta, Tuomas; Bell, Steven; Halonen, Lauri |
Contributor organization: | Department of Chemistry Molecular Science |
Date: | 2019-03-01 |
Language: | eng |
Number of pages: | 4 |
Belongs to series: | Optics Letters |
ISSN: | 0146-9592 |
DOI: | https://doi.org/10.1364/OL.44.001142 |
URI: | http://hdl.handle.net/10138/312056 |
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. 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 (CH4)-C-14 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane. (c) 2019 Optical Society of America |
Subject: |
RADIOCARBON DIOXIDE
C-14 116 Chemical sciences |
Peer reviewed: | Yes |
Usage restriction: | openAccess |
Self-archived version: | acceptedVersion |
Total number of downloads: Loading...
Files | Size | Format | View |
---|---|---|---|
AM_OFC_PAS_14CH4.pdf | 372.0Kb |
View/ |