Spatio-temporal characterization of mid-infrared laser pulses with   spatially encoded spectral shearing interferometry
  We report on the spatially resolved full amplitude and phase characterization of mid-infrared high intensity laser pulses generated in a three stage OPA. We use a spatially-encoded arrangement (SEA-)SPIDER with spectral filters for ancilla generation for spatially resolved characterization. Using five interchangeable filter sets we are able to characterize pulses from 1 to 2{\mu}m with one single device with minimal adjustments. 
Tobias Witting, Sebastien J. Weber, John W. G. Tisch, and Jonathan P.   Marangos
physics.optics