We demonstrate an extremely simple frequency-resolved-optical-gating (GRENOUILLE) device for measuring the
intensity and phase of relatively long-ps-pulses. In order to achieve the required high spectral resolution and large
temporal range, it uses a few-cm-thick second-harmonic-generation crystal in the shape of a pentagon. This has the
additional advantage of reducing the device's total number of components to as few as three simple easily aligned optics,
making it the simplest device ever developed for complete pulse measurement. We report complete intensity-and-phase
measurements of pulses up to 15ps long with a time-bandwidth product of 21.
We measure the complete electric field of extremely complex ultrafast waveforms using the simple linear-optical,
interferometric pulse-measurement technique, MUD TADPOLE. In its scanning variation, we measured waveforms with
time-bandwidth products exceeding 65,000 with ~40 fs temporal resolution over a temporal range of ~3.5ns. In the
single-shot variation we measured complex waveforms time-bandwidth products exceeding 65,000. The approach is
general and could allow the measurement of arbitrary optical waveforms.
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