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.
Peccianti, M., Clerici, M., Pasquazi, A., Caspani, L., Ho, S.P., Buccheri, F., et al. (2013). Exact reconstruction of thz Sub-λ source features in knife-edge measurements. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 19(NO. 1, JANUARY/FEBRUARY 2013) [10.1109/JSTQE.2012.2209176].
Exact reconstruction of thz Sub-λ source features in knife-edge measurements
BUSACCA, Alessandro;
2013-01-01
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.
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