Three dimensional imaging of short pulses
M. A. C. Potenza, S. Minardi, J. Trull, G. Blasi, D. Salerno, P. Di Trapani, A. Varanavicius, A. Piskarskas
Abstract
We exploit a slightly noncollinear second-harmonic cross-correlation scheme to map the 3D space-time intensity distribution of an unknown complex-shaped ultrashort optical pulse. We show the capability of the technique to reconstruct both the amplitude and the phase of the field through the coherence of the nonlinear interaction down to a resolution of 10 μm in space and 200 fs in time. This implies that the concept of second-harmonic holography can be employed down to the sub-ps time scale, and used to discuss the features of the technique in terms of the reconstructed fields.
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