| Numéro |
J. Phys. IV France
Volume 04, Numéro C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique |
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|---|---|---|
| Page(s) | C7-523 - C7-526 | |
| DOI | https://doi.org/10.1051/jp4:19947123 | |
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-523-C7-526
DOI: 10.1051/jp4:19947123
ETH Zurich, Institute of Quantum Electronics, 8093 Zurich, Switzerland
© EDP Sciences 1994
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-523-C7-526
DOI: 10.1051/jp4:19947123
Photoacoustic spectroscopy on gases with high pressure continuously tunable CO2 laser
P. Repond and M.W. SigristETH Zurich, Institute of Quantum Electronics, 8093 Zurich, Switzerland
Abstract
We present a novel photoacoustic detection system with a high pressure CO2 laser as radiation source. The laser is continuously tunable across wavelength ranges from 13 cm-1 to 18 cm-1 wide. The narrow bandwidth of 0.017 cm-1 allows to resolve any fine structure in the absorption spectra of trace gases at atmospheric pressure. The absorption spectra of four gases are reported, demonstrating the great potential improvement in detection selectivity.
© EDP Sciences 1994