Walch Pierre, Mahieu Benoît, Moreno Victor, Produit Thomas, Andral Ugo, André Yves-Bernard, Bizet Laurent, Lozano Magali, Herkommer Clemens, Moret Michel, Jung Robert, Bessing Robert, Klingebiel Sandro, Bertho Yann, Metzger Thomas, Mysyrowicz André, Wolf Jean-Pierre, Kasparian Jérôme, Houard Aurélien
Laboratoire d'Optique Appliquée, ENSTA Paris, École Polytechnique, CNRS, IP Paris, 828 boulevard des Maréchaux, 91762, Palaiseau, France.
Groupe de Physique Appliquée, Université de Genève, Ch. de Pinchat 22, 1211, Geneva 4, Switzerland.
Sci Rep. 2023 Oct 29;13(1):18542. doi: 10.1038/s41598-023-45660-9.
In the framework of the Laser Lightning Rod project, whose aim is to show that laser-induced filaments can guide lightning discharges over considerable distances, we study over a distance of 140 m the filaments created by a laser system with J-range pulses of 1 ps duration at 1 kHz repetition rate. We investigate the spatial evolution of the multiple filamentation regime using the fundamental beam at 1030 nm or using combination with the second and third harmonics. The measurements were made using both a collimated beam and a loosely focused beam.
在“激光避雷针”项目的框架内，其目的是证明激光诱导的细丝能够在相当长的距离上引导闪电放电，我们研究了一个激光系统产生的细丝在140米距离上的情况，该激光系统具有1千赫兹重复频率、持续时间为1皮秒的J范围脉冲。我们使用1030纳米的基波光束或与二次谐波和三次谐波结合，研究多丝化区域的空间演化。测量是使用准直光束和弱聚焦光束进行的。
