2009/04/06 by Fabio Bonaretti, Daniele Faccio, Matteo Clerici +2 · 1 citation
Physics and Astronomy · #physics.optics
paper · pdf · doi:10.1364/oe.17.009804
arxiv created 2009/04/06 · arxiv updated 2015/05/13
We propose a new experimental technique, which allows for a complete characterization of ultrashort optical pulses both in space and in time. Combining the well-known Frequency-Resolved-Optical-Gating technique for the retrieval of the temporal profile of the pulse with a measurement of the near-field made with an Hartmann-Shack sensor, we are able to retrieve the spatiotemporal amplitude and phase profile of a Bessel-X pulse. By following the pulse evolution along the propagation direction we highlight the superluminal propagation of the pulse peak.