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White-light femtosecond Lidar at 100TW power level

Petrarca, M. ; Henin, S. ; Berti, N. ; Matthews, M. ; Chagas, J. ; Kasparian, J. ; Wolf, J.-P ; Gatti, G. ; Di Pirro, G. ; Anania, M.-P ; Ferrario, M. ; Ghigo, A.

In: Applied Physics B, 2014, vol. 114, no. 3, p. 319-325

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    Titre
    • White-light femtosecond Lidar at 100TW power level
    Auteur
    • Petrarca, M.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Henin, S.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Berti, N.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Matthews, M.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Chagas, J.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Kasparian, J.. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Wolf, J.-P. GAP, Université de Genève, Chemin de Pinchat 22, 1211, Genève 4, Switzerland
    • Gatti, G.. INFN-LNF, Via E. Fermi, 40, 00044, Frascati, Rome, Italy
    • Di Pirro, G.. INFN-LNF, Via E. Fermi, 40, 00044, Frascati, Rome, Italy
    • Anania, M.-P. INFN-LNF, Via E. Fermi, 40, 00044, Frascati, Rome, Italy
    • Ferrario, M.. INFN-LNF, Via E. Fermi, 40, 00044, Frascati, Rome, Italy
    • Ghigo, A.. INFN-LNF, Via E. Fermi, 40, 00044, Frascati, Rome, Italy
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Applied Physics B, 2014, vol. 114, no. 3, p. 319-325. Springer Berlin Heidelberg
    Autre version électronique
    Classification
    • Physique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:326349
    Summary
    We characterized the white-light supercontinuum emission by a sub-petawatt laser system in the atmosphere via light detection and ranging measurements. As much as 1J of supercontinuum is generated in the atmosphere, corresponding to a conversion efficiency of 30%. This generation occurs at altitudes below 100m. The high initial beam intensity results in the saturation of the number of self-guided filaments. Therefore, the "photon bath” surrounding the filaments strongly contributes to the white-light generation. These finding is well reproduced by numerical simulations based on the experimental parameters.