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.

Emergence of X-shaped spatiotemporal coherence in optical waves

JEDRKIEWICZ, OTTAVIA;FACCIO, DANIELE FRANCO ANGEL;DI TRAPANI, PAOLO
2006

Abstract

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.
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.97.243903
Jedrkiewicz, Ottavia; Picozzi, A.; Clerici, M.; Faccio, DANIELE FRANCO ANGEL; DI TRAPANI, Paolo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/1749890
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