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Exact reconstruction of thz Sub-λ source features in knife-edge measurements

  • Autori: Peccianti, M.; Clerici, M.; Pasquazi, A.; Caspani, L.; Ho, S.; Buccheri, F.; Ali, J.; Busacca, A.; Ozaki, T.; Morandotti, R.
  • Anno di pubblicazione: 2013
  • Tipologia: Articolo in rivista (Articolo in rivista)
  • OA Link:


The spatial features of a subwavelength terahertz source are not accessible using time-integrated knife-edge (KE) techniques due to the nonseparable space-time nature of the radiated field and to systematic modifications induced by the blade itself. We show that by combining KE with a time-resolved electro-optical sampling, the space-time coupling can be addressed and the source field profile can be exactly reconstructed.