Spectral shearing interferometry with spatially chirped replicas for measuring ultrashort pulses.
A new spectral shearing interferometry technique for ultrashort pulse characterization is demonstrated. The method makes use of a spectral shear that varies across the test pulse beam profile to generate a two-dimensional interferogram that allows simultaneous reference phase measurement and pulse-field reconstruction from a single data set. The method uses a new configuration for upconversion of a single (non-spatially chirped) test pulse with two spatially chirped ancillary pulses in a medi...Expand abstract
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