Synchronized off-harmonic probe laser with highly variable pulse duration for laser-plasma interaction experiments  

作　　者：J.Hornung Y.Zobus H.Lorenté C.Brabetz B.Zielbauer V.Bagnoud 

机构地区：[1]GSI Helmholtzzentrum für Schwerionenforschung GmbH,Darmstadt,Germany [2]Institut d’Optique,UniversitéParis-Saclay,Palaiseau,France [3]Institut für Angewandte Physik,Technische Universität Darmstadt,Darmstadt,Germany

出　　处：《High Power Laser Science and Engineering》2024年第1期99-107,共9页高功率激光科学与工程（英文版）

摘　　要：This paper presents the development and experimental utilization of a synchronized off-harmonic laser system designed as a probe for ultra-intense laser±plasma interaction experiments. The system exhibits a novel seed-generation design,allowing for a variable pulse duration spanning over more than three orders of magnitude, from 3.45 picoseconds to 10 nanoseconds. This makes it suitable for various plasma diagnostics and visualization techniques. In a side-view configuration, the laser was employed for interferometry and streaked shadowgraphy of a laser-induced plasma while successfully suppressing the self-emission background of the laser±plasma interaction, resulting in a signal-to-self-emission ratio of 110 for this setup. These properties enable the probe to yield valuable insights into the plasma dynamics and interactions at the PHELIX facility and to be deployed at various laser facilities due to its easy-to-implement design.

关 键 词：INTERFEROMETRY laser-plasma interaction off-harmonic probe laser streaked shadowgraphy 

分 类 号：TN249[电子电信—物理电子学] O53[理学—等离子体物理]