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A new strategy of pulse shaping based on the quasi-direct space-to-time (QDST) conversion principle has been recently proposed theoretically [Mínguez-Vega , Opt. Express 16, 16993 (2008)]. In this letter, the working principle of this pulse shaper has been experimentally verified by using a simple second order cross-correlation setup with spatial resolution. The QDST conversion principle is evidenced through the experimental measurement of the parabolic dependence of the time delay on the focal plane versus the radii of the components of the spatial profile in the far field.
Date of Publication: Feb.15, 2012