Transition of Femtosecond-Filament-Solid Interactions from Single to Multiple Filament Regime.

ABSTRACT: High-peak-power fs-laser filaments offer unique characteristics attractive to remote sensing via techniques such as remote laser-induced breakdown spectroscopy (R-LIBS). The dynamics of several ablation mechanisms following the interaction between a filament and a solid determines the emission strength and reproducibility of target plasma, which is of relevance for R-LIBS applications. We investigate the space- and time-resolved dynamics of ionic and atomic emission from copper as well as the surrounding atmosphere in order to understand limitations of fs-filament-ablation for standoff energy delivery. Furthermore, we probe the shock front produced from filament-target interaction using time-resolved shadowgraphy and infer laser-material coupling efficiencies for both single and multiple f

SUBMITTER: Skrodzki PJ 

PROVIDER: S-EPMC5630638 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature