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A new detection scheme capable of acquiring the entire spatiotemporal profileof terahertz radiation in a single laser shot is being demonstrated. The designallows temporal resolution of the order of transform-limited pulse duration ofthe probe, which is an absolute benefit over the compromised resolution ofotherwise prevalent single-shot detection schemes based on spectral encoding ofterahertz waveform on a temporally chirped readout pulse. This makes thetechnique perfectly suitable for sensitive spectroscopy studies. The singleshot detection technique presented here relies on space-to-time mapping ofterahertz temporal profile by use of a converging probe intensity front. Thepresent approach does not require any specialized optics and is implementedusing very straightforward alignment procedure. It has shown to reproduce thetemporal waveform of terahertz radiation faithfully.

A simple and straightforward technique for single shot measurement of terahertz profile