Dual-scale turbulence in filamenting laser beams at high average power Article Swipe

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Turbulence Millisecond Physics Laser Optics Range (aeronautics) Clear-air turbulence Scale (ratio) Mechanics Laser beams Meteorology Materials science Astronomy Composite material Quantum mechanics

Elise Schubert , Lorena de la Cruz , Denis Mongin , Sandro Klingebiel , Marcel Schultze , Thomas Metzger , Knut Michel , Jérôme Kasparian , Jean‐Pierre Wolf ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.1103/physreva.94.043808 · OA: W2531417630

We investigate the self-induced turbulence of high repetition rate laser\nfilaments over a wide range of average powers (1 mW to 100 W) and its\nsensitivity to external atmospheric turbulence. Although both\nexternally-imposed and self-generated turbulences can have comparable\nmagnitudes, they act on different temporal and spatial scales. While the former\ndrives the shot-to-shot motion at the millisecond time scale, the latter acts\non the 0.5 s scale. As a consequence, their effects are decoupled, preventing\nbeam stabilization by the thermally-induced low-density channel produced by the\nlaser filaments.\n