Simplified spectral phase interferometry for direct electric-field reconstruction by using a thick nonlinear crystal |
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| Authors: | Radunsky Aleksander S Williams Ellen M Kosik Walmsley Ian A Wasylczyk Piotr Wasilewski Wojciech U'Ren Alfred B Anderson Matthew E |
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| 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 |
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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. |
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