Webmaster: N. Picqué
(Latest update: 15/12/2007)

Laser and interferometric instrumentation for spectroscopy
Welcome
 
Our team is part of a group of the Laboratoire de Photophysique Moléculaire, a research laboratory of the CNRS, located at Orsay University, near Paris.
We develop and implement new spectroscopic methods based on lasers, optics and Fourier transform spectroscopy. We apply them to trace gas detection and high sensitivity spectroscopy.

Applications vary from fundamental study of lines of extremely weak intensity to trace gas detection and environmental sensing.

One of our major objectives is to implement an innovative spectroscopic technique, “Femtosecond frequency comb spectrometry”, providing simultaneously extremely high sensitivity, Doppler limited resolution, rapid acquisition time, broad spectral extension, good wavelength and intensity accuracies for the determination of the dispersion and the absorption of gas phase constituents.  It is based the simultaneous analysis of all the lines of the frequency comb.
Guelachvili, Mandon, Jacquet, Girard, Gueye, Picqué, Vallon
From the left to the right:: Guy Guelachvili, Julien Mandon, Patrick Jacquet, Véronique Girard, Fatou Gueye, Nathalie Picqué, Raphaël Vallon  (October 2007).
Photographie prise par Jean-François Dars, CNRS.
Limongi, Saquet, Girard, Mandon, Picqué, Jacquemet, Guelachvili, may 2006
From the left to the right: André Limongi, Nicolas Saquet, Véronique Girard, Julien Mandon, Nathalie Picqué, Mathieu Jacquemet, Guy Guelachvili (May 2006).

Guelachvili Picqué Herbin Gueye Girard Farrenq - April 2004

From the left to the right: Guy Guelachvili, Nathalie Picqué, Hervé Herbin, Fatou Gueye, Véronique Girard, Robert Farrenq (April 2004)