Interferometric technique for measuring broadband ultrashort pulses at the sampling limit.
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.
Kosik
Ellen M
EM
Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Radunsky
Aleksander S
AS
Walmsley
Ian A
IA
Dorrer
Christophe
C