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

Aleksander S. Radunsky, Ellen M. Kosik Williams, Ian A. Walmsley, Piotr Wasylczyk, Wojciech Wasilewski, Alfred B. U’Ren, and Matthew E. Anderson

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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.

© 2006 Optical Society of America

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