Search results for "pump-robe spectroscopy"

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Probing phonon dynamics with multidimensional high harmonic carrier-envelope-phase spectroscopy

2022

We explore pump-probe high harmonic generation (HHG) from monolayer hexagonal-Boron-Nitride, where a terahertz pump excites coherent optical phonons that are subsequently probed by an intense infrared pulse that drives HHG. We find, through state-of-the-art ab-initio calculations, that the structure of the emission spectrum is attenuated by the presence of coherent phonons, and is no longer comprised of discrete harmonic orders, but rather of a continuous emission in the plateau region. The HHG yield strongly oscillates as a function of the pump-probe delay, corresponding to ultrafast changes in the lattice such as bond compression or stretching. We further show that in the regime where the…

Condensed Matter - Materials ScienceMultidisciplinarynonlinear opticsphononsMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesPhysics::OpticsElectron-phonon couplingSettore FIS/03 - Fisica Della Materiaultrafast spectroscopypump-robe spectroscopyPhysics::Atomic and Molecular ClustersHHGOptics (physics.optics)Physics - Optics

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