Spectral diagnostics of a vapor-plasma plume produced during welding titanium with a high-power ytterbium fiber laser

23rd International Laser Physics Workshop

Uspenskiy, S.A.^1 ; Petrovskiy, V.N.^1 ; Bykovskiy, D.P.^1 ; Mironov, V.D.^1 ; Prokopova, N.M.^1 ; Tret'Yakov, E.V.^2

National Research Nuclear University mEPhI, Moscow, Russia^1

NPO CNIITMASH, Moscow, Russia^2

关键词: High power;    High power fiber lasers;    High-speed video;    Inverse bremsstrahlung absorption;    Plasma plumes;    Shielding gas;    Spectral diagnostics;    Ytterbium fiber laser;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/594/1/012033/pdf
DOI  :  10.1088/1742-6596/594/1/012033

来源: IOP

【 摘 要 】

This work is devoted to the research of welding plume during high power ytterbium fiber laser welding of a titanium alloy in the Ar shielding gas environment. High speed video observation of a vapor-plasma plume for visualization of processes occurring at laser welding was carried out. The coefficient of the inverse Bremsstrahlung absorption of laser radiation is calculated for a plasma welding plume by results of spectrometer researches. The conclusion deals with the impact of plasma on a high-power fiber laser radiation.