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 14 CH 4 is reported and given a preliminary assignment. The results lay a foundation for the development of optical detection systems for radiocarbon methane.
Original language | English |
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Pages (from-to) | 1142-1145 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 44 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Mar 2019 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics