Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Marc Chenevier"'
Autor:
Jean-Marc Weulersse, Agnes Pailloux, Marc Chenevier, Julien Cousin, Daniele Romanini, Titus Gherman, Catherine Gallou
Publikováno v:
Lasers, Sources and Related Photonic Devices.
Leak detection and localization is an issue for facility and population safety and security. The paper shows that low leak rates of methane, down to 5 10−9mbar.L/s, are detected by OF-CEAS technique under atmospheric pressure.
Publikováno v:
SPIE Proceedings.
This paper reports on the development of optically based techniques to detect and identify chemical agents. Detection sensitivity and molecule discrimination are studied. In parallel, efforts are made to develop rugged and compact experimental design
Publikováno v:
Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV.
We recently demonstrated trace detection using Cavity Ring Down Spectroscopy (CRDS) coupled with telecom DFB diode lasers. Our scheme exploits optical feedback from a V-shaped cavity back to the laser. We built trace-gas detectors for CH4 and HF, cha
Publikováno v:
SPIE Proceedings.
Ultrasensitive optical spectroscopy technologies for environment monitoring, and in general, for gas analysis in the near Infrared are mainly based on the following spectroscopic methods: diode laser spectroscopy with multipass cells, with or without