6533b85dfe1ef96bd12be8f0
RESEARCH PRODUCT
Polarized multiplex coherent anti-Stokes Raman scattering using a picosecond laser and a fiber supercontinuum
Sébastien MichelJohn M. DudleyAntoine CourjaudHervé RigneaultChristophe FinotEric Mottaysubject
Materials scienceBiomedical EngineeringPhysics::Optics02 engineering and technologySpectrum Analysis Raman01 natural sciencesPattern Recognition Automated010309 opticsBiomaterialssymbols.namesakeLaser linewidthOptics87.64.kp 87.63.ltFiber laser0103 physical sciencesDepolarization ratioFiber Optic TechnologyCoherent anti-Stokes Raman spectroscopy[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]business.industryLasersEquipment Design021001 nanoscience & nanotechnologyImage EnhancementAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsSupercontinuumEquipment Failure AnalysissymbolsOptoelectronicsMicroscopy Polarization0210 nano-technologybusinessRaman spectroscopyRaman scatteringPhotonic-crystal fiberdescription
International audience; We perform multiplex coherent anti-Stokes Raman scattering (CARS) micro-spectroscopy with a picosecond pulsed laser and a broadband supercontinuum (SC) generated in photonic crystal fiber. CARS signal stability is achieved using an active fiber coupler that avoids thermal and mechanical drifts. We obtain multiplex CARS spectra for test liquids in the 600–2000 cm−1 spectral range. In addition we investigate the polarization dependence of the CARS spectra when rotating the pump beam linear polarization state relative to the linearly polarized broad stokes SC. From these polarization measurements we deduce the Raman depolarization ratio, the resonant versus nonresonant contribution, the Raman resonance frequency, and the linewidth.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-03 |