Self-referenced characterization of space-time couplings in near   single-cycle laser pulses
  We report on the characterization of space-time couplings in high energy sub-2-cycle 770nm laser pulses using a self-referencing single-shot method. Using spatially-encoded arrangement filter-based spectral phase interferometry for direct electric field reconstruction (SEA-F-SPIDER) we characterize few-cycle pulses with a wave-front rotation of 2.8x?10^11 rev/sec (1.38 mrad per half-cycle) and pulses with pulse front tilts ranging from to -0.33 fs/um to -3.03 fs/um. 
T. Witting, D.R. Austin, T. Barilot, D. Greening, P. Matia-Hernando,   D. Walke, J.P. Marangos, J.W.G. Tisch
physics.optics