DETECTION OF FORMALDEHYDE USING MIDINFRARED DIFFERENCE-FREQUENCY-GENERATION

Authors
MINE Y MELANDER N RICHTER D LANCASTER DG PETROV KP CURL RF TITTEL FK
Citation
Y. Mine et al., DETECTION OF FORMALDEHYDE USING MIDINFRARED DIFFERENCE-FREQUENCY-GENERATION, Applied physics. B, Lasers and optics, 65(6), 1997, pp. 771-774
Citations number
18
Journal title
Applied physics. B, Lasers and optics → ACNP
ISSN journal
09462171
Volume
65
Issue
6
Year of publication
1997
Pages
771 - 774
Database
ISI
SICI code
0946-2171(1997)65:6<771:DOFUMD>2.0.ZU;2-R
Abstract
Real-time detection and measurement of sub-ppm levels of formaldehyde in ambient air using diode-pumped 3.5 mu m difference-frequency genera tion (DFG) in periodically poled LiNbO3 (PPLN) is reported. Minimum de tectable concentration of 30 ppb was achieved with a compact, portable room-temperature gas sensor configured for formaldehyde (H2CO) detect ion. This sensitivity, coupled with high selectivity and long term sta bility, is sufficient for various environmental applications.