Emergence of X-shaped spatiotemporal coherence in optical waves

Considering the problem of parametric nonlinear interaction, we report the experimental observation of electromagnetic waves characterized by an X-shaped spatiotemporal coherence; i.e., coherence is neither spatial nor temporal, but skewed along specific spatiotemporal trajectories. The application...

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Bibliographic Details
Published inPhysical review letters Vol. 97; no. 24; p. 243903
Main Authors Jedrkiewicz, O, Picozzi, A, Clerici, M, Faccio, D, Di Trapani, P
Format Journal Article
LanguageEnglish
Published United States 15.12.2006
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Summary:Considering the problem of parametric nonlinear interaction, we report the experimental observation of electromagnetic waves characterized by an X-shaped spatiotemporal coherence; i.e., coherence is neither spatial nor temporal, but skewed along specific spatiotemporal trajectories. The application of the usual, purely spatial or temporal, measures of coherence would erroneously lead to the conclusion that the field is fully incoherent. Such hidden coherence has been identified owing to an innovative diagnostic technique based on simultaneous analysis of both the spatial and temporal spectra.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.97.243903