0000000000121551

AUTHOR

François Légaré

showing 4 related works from this author

Towards CEP stable sub two cycle IR pulse compression with bulk material

2010

We demonstrate both experimentally and numerically that self-steepening during propagation in a hollow-fiber followed by linear propagation through glass in the anomalous dispersion enables pulse compression down to 1.9 cycles at 1.8 micron wavelength.

Optical amplifierFemtosecond pulse shapingMaterials sciencebusiness.industryPhysics::OpticsSecond-harmonic generationAstrophysics::Cosmology and Extragalactic AstrophysicsWavelengthOpticsPulse compressionOptoelectronicsHigh harmonic generationHigh Energy Physics::ExperimentbusinessSelf-phase modulationBandwidth-limited pulseFrontiers in Optics 2010/Laser Science XXVI
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Mechanism of hollow-core-fiber infrared-supercontinuum compression with bulk material

2010

We numerically investigate the pulse compression mechanism in the infrared spectral range based on the successive action of nonlinear pulse propagation in a hollow-core fiber followed by linear propagation through bulk material. We found an excellent agreement of simulated pulse properties with experimental results at 1.8 {mu}m in the two-optical-cycle regime close to the Fourier limit. In particular, the spectral phase asymmetry attributable to self-steepening combined with self-phase modulation is a necessary prerequisite for subsequent compensation by the phase introduced by glass material in the anomalous dispersion regime. The excellent agreement of the model enabled simulating pressur…

Physicsbusiness.industryInfraredPhase (waves)ddc:500.201 natural sciencesAtomic and Molecular Physics and OpticsSpectral lineSupercontinuumPulse (physics)010309 opticsWavelengthOpticsPulse compression0103 physical sciences010306 general physicsbusinessSelf-phase modulationPhysical Review A
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Ultrafast dynamics of adenine following XUV ionization

2022

JPhys photonics 4, 034003 (2022). doi:10.1088/2515-7647/ac6ea5 special issue: "Focus on Nanophotonics and Biophotonics for Biomedical and Environmental Applications"

PaperSettore FIS/03ultrafastFocus on Nanophotonics and Biophotonics for Biomedical and Environmental Applicationsdynamicsdissociation530Atomic and Molecular Physics and OpticsSettore FIS/03 - Fisica Della MateriaElectronic Optical and Magnetic MaterialsXUVPhysics::Atomic and Molecular Clustersddc:530Electrical and Electronic EngineeringadeninenucleobaseJOURNAL OF PHYSICS-PHOTONICS
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Towards CEP stable, single-cycle pulse compression with bulk material

2010

We demonstrate both experimentally and numerically that self-steepening during propagation in a hollow-fiber followed by linear propagation through glass in the anomalous dispersion enables pulse compression down to 1.6 cycles at 1.8 µm wavelength.

Femtosecond pulse shapingMaterials sciencebusiness.industryPhysics::OpticsNonlinear opticsSecond-harmonic generationWavelengthOpticsPulse compressionHigh harmonic generationHigh Energy Physics::ExperimentbusinessSelf-phase modulationUltrashort pulseInternational Conference on Ultrafast Phenomena
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