Abstract
The temporal intensity of ultrashort optical pulses vary so fast that electronic devices (streak camera etc.) are too slow to measure the evolution. Therefore, many techniques were developed trying to characterize the temporal pulse shape. Most of them extract the temporal intensity either by assuming an analytic pulse shape (autocorrelation) or with the help of spectral measurements (including FROG1 and SPIDER.2) However, in the later 1960, it was shown that without spectral measurement and pulse-shape assumption a triple-correlation is sufficient to determine the temporal intensity of a laser pulse with a direct mathematical calculation.3
© 2002 Optical Society of America
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