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arXiv · 0911.4589

Spatiotemporal amplitude-and-phase reconstruction by Fourier-transform of interference spectra of high-complex-beams

Benjamin Alonso·Inigo J. Sola·Oscar Varela·Juan Hernandez-Toro·Cruz Mendez·Julio San Roman·Amelle Zair·Luis Roso
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Abstract

We propose a novel method to reconstruct the spatio-temporal amplitude and phase of the electric field of ultrashort laser pulses using spatially-resolved spectral interferometry. This method is based on a fiber-optic coupler interferometer that has certain advantages in comparison with standard interferometer systems, such as it being alignment-free and selection of the reference beam at a single point. Our technique, which we refer to as STARFISH, offers compactness and simplicity. We report its application to the experimental characterization of chirped pulses and to spatio-temporal reconstructions of a convergent beam as well as plane-plane and spherical-plane waves interferences, which we check with our simulations.

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Benjamin Alonso, Inigo J. Sola, Oscar Varela, Juan Hernandez-Toro, Cruz Mendez, Julio San Roman, Amelle Zair, Luis Roso. 2009-11-24. Spatiotemporal amplitude-and-phase reconstruction by Fourier-transform of interference spectra of high-complex-beams. https://doi.org/10.1364/josab.27.000933

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