Simplified spectral phase interferometry for direct electric-field reconstruction by using a thick nonlinear crystal.

@article{Radunsky2006SimplifiedSP,
  title={Simplified spectral phase interferometry for direct electric-field reconstruction by using a thick nonlinear crystal.},
  author={Aleksander S Radunsky and Ellen M. Kosik Williams and Ian A. Walmsley and Piotr Wasylczyk and Wojciech Wasilewski and Alfred B. U'Ren and M. Elizabeth Anderson},
  journal={Optics letters},
  year={2006},
  volume={31 7},
  pages={1008-10}
}
We propose and demonstrate a novel implementation of spectral-shearing interferometry (SSI) for reconstructing the electric field of ultrashort pulses by utilizing asymmetric group velocity matching in a long nonlinear crystal. The proposed configuration eliminates the requirement for a linearly chirped auxiliary pulse that is in common in all existing SSI methods, relying on nonlinear conversion to produce a spectral shear.