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.
|Number of pages||11|
|Journal||IEEE Journal of Selected Topics in Quantum Electronics|
|Publication status||Published - 1 Feb 2013|
- Phase-sensitive field characterization
- spatiotemporal field characterization
- subwavelength sources
- terahertz (THz) sources