Simplified spectral phase interferometry for direct electric-field reconstruction by using a thick nonlinear crystal.
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.
Radunsky
Aleksander S
AS
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
Williams
Ellen M Kosik
EM
Walmsley
Ian A
IA
Wasylczyk
Piotr
P
Wasilewski
Wojciech
W
U'Ren
Alfred B
AB
Anderson
Matthew E
ME