Rotational Raman effects in the wake of optical filamentation |
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| Authors: | Calegari F Vozzi C Gasilov S Benedetti E Sansone G Nisoli M De Silvestri S Stagira S |
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| Affiliation: | National Laboratory for Ultrafast and Ultraintense Optical Science-CNR-INFM, Dipartimento di Fisica, Politecnico di Milano, Milano, I-20133, Italy. francesca.calegari@polimi.it |
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| Abstract: | The spatiotemporal effects generated in the wake of a laser filament propagating in nitrogen are investigated. At suitable time delays, a probe light pulse propagating along the wake experiences a strong spatial confinement and a noticeable spectral broadening at the same time. Numerical simulations, well reproducing the experimental findings, show the key role of the impulsive rotational Raman response in the observed phenomena. |
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