title: Simplified spectral phase interferometry for direct electric-field reconstruction by using a thick nonlinear crystal.
abstract: 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.
authors.affiliation: Institute of Optics, University of Rochester, Rochester, New York 14627 and Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK. alexr@optics.rochester.edu
authors.forename: Aleksander S
authors.initials: AS
authors.lastname: Radunsky
authors.forename: Ellen M Kosik
authors.initials: EM
authors.lastname: Williams
authors.forename: Ian A
authors.initials: IA
authors.lastname: Walmsley
authors.forename: Piotr
authors.initials: P
authors.lastname: Wasylczyk
authors.forename: Wojciech
authors.initials: W
authors.lastname: Wasilewski
authors.forename: Alfred B
authors.initials: AB
authors.lastname: U'Ren
authors.forename: Matthew E
authors.initials: ME
authors.lastname: Anderson