Exact reconstruction of thz Sub-λ source features in knife-edge measurements
- Authors: Peccianti, M; Clerici, M; Pasquazi, A; Caspani, L; Ho, SP; Buccheri, F; Ali, J; Busacca, A; Ozaki, T; Morandotti, R
- Publication year: 2013
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/76449
Abstract
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.