White-light femtosecond Lidar at 100 TW power level

Article Article scientifique Article White-light femtosecond Lidar at 100 TW power level eng 2013 author Petrarca Massimo 743546 author Henin Stefano 680938 author Berti Nicolas 786174 author Matthews Mary author Chagas Julio 783224 author Kasparian Jérôme 0000-0003-2398-3882 662563 author Wolf Jean-Pierre 0000-0003-3729-958X 631266 author Gatti Giovanni Marcellino 77708 author Di Pirro G. author Anania M.-P. author Ferrario M. author Ghigo A. 319-325 10.1007/s00340-013-5741-6 0946-2171 http://link.springer.com/10.1007/s00340-013-5741-6 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 1 J of supercontinuum is generated in the atmosphere, corresponding to a conversion efficiency of 30 %. This generation occurs at altitudes below 100 m. 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. Dewey 500.2 Dewey 333.7-333.9 18 Institut des sciences de l'environnement 0DB 35 Groupe de physique appliquée 135 false 943 ISE Climat 938 ISE Pôle Sciences Applied physics. B, Lasers and optics 114 3 98eba605-c5f9-40b4-ba13-2a3cf70a4467 Article (Published version) Restricted Wolf2_2013.pdf 614022 application/pdf restrictedAccess Centres et instituts / Institut des sciences de l'environnement Faculté des sciences / Section de physique / Groupe de physique appliquée

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White-light femtosecond Lidar at 100 TW power level	Applied physics. B, Lasers and optics			2013	725	9

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Gatti, Giovanni Marcellino