Exact Reconstruction of THz Sub-λ Source Features in Knife-Edge Measurements

Marco Peccianti*, Matteo Clerici, Alessia Pasquazi, Lucia Caspani, Sze Phing Ho, Fabrizio Buccheri, Jalil Ali, Alessandro Busacca, Tsuneyuki Ozaki, Roberto Morandotti

*Corresponding author for this work

Research output: Contribution to journalArticle

18 Citations (Scopus)


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 electrooptical sampling, the space-time coupling can be addressed and the source field profile can be exactly reconstructed.

Original languageEnglish
Article number8401211
Number of pages11
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number1
Publication statusPublished - 1 Feb 2013


  • Phase-sensitive field characterization
  • spatiotemporal field characterization
  • subwavelength sources
  • terahertz (THz) sources


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