6533b7d3fe1ef96bd126136c

RESEARCH PRODUCT

Shot-by-shot frequency calibration of CARS spectra: Application to the measurement of the collisional line shift in oxygen

Guy MillotR. ChauxGil Fanjoux

subject

Materials sciencePhysics and Astronomy (miscellaneous)business.industryAstrophysics::Instrumentation and Methods for AstrophysicsGeneral EngineeringPhysics::OpticsGeneral Physics and AstronomyLaserSpectral linelaw.inventionsymbols.namesakeInterferometryOpticsShot (pellet)lawsymbolsCalibrationPhysics::Atomic PhysicsCoherent anti-Stokes Raman spectroscopyRaman spectroscopybusinessLine (formation)

description

A technique using a Fabry-Perot interferometer has been developed to calibrate high-resolution spectra obtained by Coherent Anti-Stokes Raman Spectroscopy (CARS). This technique was used to measure simultaneously the Raman frequency and the Raman signal at each laser shot. We demonstrate the accuracy of the method by measuring theQ(15) line shifts of molecular oxygen due to collisions with oxygen and water vapour.

https://doi.org/10.1007/bf01081054