Inhomogeneous High-order Harmonic Generation in Krypton Clusters
arXiv:1301.5487 · doi:10.1103/PhysRevLett.110.083902
Abstract
High order harmonic generation from clusters is a controversial topic: conflicting theories exist, with different explanations for similar experimental observations. From an experimental point of view, separating the contributions from monomers and clusters is challenging. By performing a spectrally and spatially resolved study in a controlled mixture of clusters and monomers, we are able to isolate a region of the spectrum where the emission purely originates from clusters. Surpringly, the emission from clusters is depolarized, which is the signature of statistical inhomogeneous emission from a low-density source. The harmonic response to laser ellipticity shows that this generation is produced by a new recollisional mechanism, which opens the way to future theoretical studies.
accepted at Physical Review Letters
References in corpus (1)
Cited by in corpus (5)
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