We propose a novel method that uses a femtosecond pulse with a tilted pulse front as a probe pulse to perform real-time measurement of temporal waveforms of a terahertz pulse. This method can operate on a single shot in principle. Real-time measurement of the terahertz pulse was achieved using the dynamic subtraction method with a synchronized high-speed complimentary metal-oxide semiconductor sensor. A time window of $2.6\mathrm{ps}$ was achieved. This value agrees well with results that were calculated theoretically and measured by an interferometric inverted field autocorrelator.

© 2008 Optical Society of America

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