Abstract

We present a new technique for measuring ultrashort optical pulses by use of spectral phase interferometry for direct electric-field reconstruction that is suitable for large bandwidth pulses. The method does not require generation of a replica of the pulse to be measured and encodes the spectral phase information in a spatial interference pattern. A major advantage of this method is that the spectral sampling saturates the Whittaker–Shannon bound. Moreover, the technique allows for the characterization of some types of space–time coupling. An experimental demonstration of the technique is presented.

© 2005 Optical Society of America

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