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